Dr Kevin Gallacher

  • Lecturer: Electronic and Photonic Devices (Electronic & Nanoscale Engineering)

email: Kevin.Gallacher@glasgow.ac.uk

Electronics and Electrical Eng, Rankine Building

Import to contacts

ORCID iDhttps://orcid.org/0000-0002-4733-3940

Publications

List by: Type | Date

Jump to: 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012
Number of items: 92.

2024

Januszewicz, J. et al. (2024) Optical Phased Array for Sub-Doppler Spectroscopy of the Rubidium D2 Absorption Line. In: 2024 IEEE Photonics Conference (IPC), Rome, Italy, 10-14 Nov 2024, pp. 1-2. ISBN 9798350361957 (doi: 10.1109/ipc60965.2024.10799735)

Hawley, Ugne, Januszewicz, Jeremi, McConkey, Zack, Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Di Gaetano, Eugenio ORCID logoORCID: https://orcid.org/0000-0002-6968-7504, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2024) Integrating MEMS and Silicon-Nitride Photonic Integrated Circuits for Atomic Systems. In: 2024 IEEE Photonics Society Summer Topicals Meeting Series (SUM), Bridgetown, Barbados, 15-17 Jul 2024, ISBN 9798350393873 (doi: 10.1109/SUM60964.2024.10614497)

McConkey, Zack P., Hawley, Ugne, Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Januszewicz, Jeremi, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2024) Quartz Circular Polarising Optical Window at 80°C for MEMS Vapour Cells. In: 2024 IEEE Photonics Society Summer Topicals Meeting Series (SUM), Bridgetown, Barbados, 15-17 Jul 2024, ISBN 9798350393873 (doi: 10.1109/SUM60964.2024.10614545)

Di Gaetano, E. ORCID logoORCID: https://orcid.org/0000-0002-6968-7504, Keliehor, B., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griffin, P.F., Sorel, M. ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Riis, E. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2024) 778.1 nm distributed feedback lasers for Rb two-photon atomic systems with sub-4 kHz linewidths. APL Photonics, 9(5), 056114. (doi: 10.1063/5.0191088)

2023

Gallacher, K. et al. (2023) Silicon-Nitride Photonic Integrated Circuits for Atomic Systems. In: IEEE Photonics Society Summer Topicals Meetings Series (SUM 2023), Giardini Naxos, Italy, 17-19 July 2023, ISBN 9798350347210 (doi: 10.1109/SUM57928.2023.10224366)

Dyer, S., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Hawley, U., Bregazzi, A., Griffin, P.F., Arnold, A.S., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Riis, E. and McGilligan, J.P. (2023) Chip-scale packages for a tunable wavelength reference and laser cooling platform. Physical Review Applied, 19(4), 044015. (doi: 10.1103/PhysRevApplied.19.044015)

2022

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griffin, Paul F., Riis, Erling, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2022) Si3 N4 Waveguide Polarization Components for Atomic Systems. In: 2022 IEEE Photonics Conference (IPC), Vancouver, BC, Canada, 13-17 Nov 2022, ISBN 9781665434874 (doi: 10.1109/IPC53466.2022.9975656)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griffin, Paul F., Riis, Erling, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2022) Silicon Nitride Waveguide Polarization Components for Rubidium Saturated Absorption Spectroscopy On-Chip. Conference on Lasers and Electro-Optics (CLEO 2022), San Jose, California, USA, 15-20 May 2022. ISBN 9781957171050

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griffin, Paul F., Riis, Erling, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2022) Silicon nitride waveguide polarization rotator and polarization beam splitter for chip-scale atomic systems. APL Photonics, 7(4), 046101. (doi: 10.1063/5.0077738)

McGilligan, J. P., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griffin, P. F., Paul, D. J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Arnold, A. S. and Riis, E. (2022) Micro-fabricated components for cold atom sensors. Review of Scientific Instruments, 93, 091101. (doi: 10.1063/5.0101628) (PMID:36182455)

2021

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Grickeviciute, Ugne, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2021) Ge on Si Photonics Platform for Mid-Infrared Sensors. In: 2021 IEEE Photonics Society Summer Topicals Meeting Series (SUM), Cabo San Lucas, Mexico, 19-21 July 2021, ISBN 9781665416009 (doi: 10.1109/SUM48717.2021.9505799)

Fischer, Marco P., Maccaferri, Nicolò, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, Jacopo, Pellegrini, Giovanni, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Isella, Giovanni, Leitenstorfer, Alfred, Biagioni, Paolo and Brida, Daniele (2021) Field-resolved detection of the temporal response of a single plasmonic antenna in the mid-infrared. Optica, 8(6), pp. 898-903. (doi: 10.1364/OPTICA.420683)

Frigerio, J. et al. (2021) Ge-on-Si Based Mid-infrared Plasmonics. In: Silicon Photonics XVI, 06-12 Mar 2021, 116910M. (doi: 10.1117/12.2576175)

2020

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskeviciute, Ugne, Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Baldassarre, Leonetta, Ortolani, Michele, Soref, Richard and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) Ge-on-Si Waveguide Polarization Rotator Operating in the 8-14 µm Atmospheric Transmission Window. In: CLEO: Applications and Technology 2020, Washington, DC, USA, 10-15 May 2020, STh4L.8. ISBN 9781943580767 (doi: 10.1364/CLEO_SI.2020.STh4L.8)

Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Bayley, Joseph C. ORCID logoORCID: https://orcid.org/0000-0003-2306-4106, McBrearty, Euan ORCID logoORCID: https://orcid.org/0000-0002-2898-780X, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Hild, Stefan ORCID logoORCID: https://orcid.org/0000-0001-9221-6009 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) 1.4 Million Q-Factor 780 nm Wavelength Si3N4 Micro-rings for Chip-Scale Atomic Systems. In: CLEO: Applications and Technology 2020, Washington, DC, USA, 10-15 May 2020, STu4O.8. ISBN 9781943580767 (doi: 10.1364/CLEO_SI.2020.STu4O.8)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskeviciute, Ugne, Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Baldassarre, Leonetta, Ortolani, Michele, Soref, Richard and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) Ge-on-Si Mid-Infrared Waveguide Platform for Molecular Fingerprint Sensing. In: 22nd International Conference on Transparent Optical Networks (ICTON), Bari, Italy, 19-23 July 2020, ISBN 9781728184241 (doi: 10.1109/ICTON51198.2020.9203237)

Gallacher, K. et al. (2020) Characterization of integrated waveguides by atomic-force-microscopy-assisted mid-infrared imaging and spectroscopy. Optics Express, 28(15), pp. 22186-22199. (doi: 10.1364/OE.393748)

Gallacher, K. et al. (2020) Design and simulation of losses in Ge/SiGe terahertz quantum cascade laser waveguides. Optics Express, 28(4), pp. 4786-4800. (doi: 10.1364/OE.384993)

Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Bayley, Joseph C., McBrearty, Euan ORCID logoORCID: https://orcid.org/0000-0002-2898-780X, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Hild, Stefan ORCID logoORCID: https://orcid.org/0000-0001-9221-6009 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) 1.4 million Q factor Si₃N₄ micro-ring resonator at 780 nm wavelength for chip-scale atomic systems. Optics Express, 28(3), pp. 4010-4020. (doi: 10.1364/OE.381224)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskeviciute, Ugne, Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Baldassarre, Leonetta, Ortolani, Michele, Soref, Richard and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) Ultra-broadband mid-infrared Ge-on-Si waveguide polarization rotator. APL Photonics, 5(2), 026102. (doi: 10.1063/1.5134973)

Griskeviciute, Ugne, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Valente, Joao ORCID logoORCID: https://orcid.org/0000-0002-5917-8917 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) Ge-on-Si waveguides for sensing in the molecular fingerprint regime. Optics Express, 28(4), pp. 5749-5757. (doi: 10.1364/OE.382356)

2019

Bashir, Aneeqa, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Darbal, Amith D., Stroud, Robert, Ballabio, Andrea, Frigerio, Jacopo, Isella, Giovanni and MacLaren, Ian ORCID logoORCID: https://orcid.org/0000-0002-5334-3010 (2019) Strain analysis of Ge micro disk using precession electron diffraction. Journal of Applied Physics, 126, 235701. (doi: 10.1063/1.5113761)

Sinclair, M. et al. (2019) High-Q Si3N4 Ring Resonators for Locking 780nm GaAs-Based Distributed Feedback Laser. In: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 23-27 Jun 2019, ISBN 9781728104690 (doi: 10.1109/CLEOE-EQEC.2019.8872725)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griskeviciute, Ugne, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) Ultra Broadband Mid-Infrared Ge-on-Si Polarization Rotator. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853922)

Griskeviciute, Ugne, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 and MacGilp, Iain (2019) Understanding the Sidewall Dependence of Loss for Ge-on-Si Waveguides in the Mid-Infrared. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853945)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskeviciute, U., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Sorel, M. ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Baldassarre, L. and Ortolani, M. (2019) Molecular Fingerprint Sensing Using Ge-on-Si Waveguides. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853881)

Fischer, Marco P., Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, Jacopo, Pellegrini, Giovanni, Isella, Giovanni, Leitenstorfer, Alfred, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Biagioni, Paolo and Brida, Daniele (2019) Field-Resolved Detection of the Temporal Response of a Mid-Infrared Plasmonic Antenna. CLEO: QELS_Fundamental Science 2019, San Jose, CA, USA, 05-10 May 2019. ISBN 9781943580576

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Sinclair, M. ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Sharp, O., Mirando, F., Ternent, G., Mills, G., Casey, B. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) Integrated DFB Lasers on Si3N4 Photonic Platform for Chip-Scale Atomic Systems. CLEO: Science and Innovations 2019, San Jose, CA, USA, 05-10 May 2019. ISBN 9781943580576 (doi: 10.1364/CLEO_SI.2019.STu4O.7)

Griškevičiūtė, U., Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Baldassarre, L., Sorel, M. ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Ortolani, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) Fingerprint Mid-Infrared Sensing With Germanium on Silicon Waveguides. In: CLEO: Science and Innovations 2019, San Jose, CA, USA, 05-10 May 2019, ISBN 9781943580576 (doi: 10.1364/CLEO_SI.2019.STh1N.2)

Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griskeviciute, Ugne, Baldassarre, Leonetta, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Ortolani, Michele and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) Low Loss Germanium-on-Silicon Waveguides for Integrated Mid-Infrared Photonics. In: SPIE OPTO 2019, San Francisco, CA, USA, 02-07 Feb 2019, 109230S. (doi: 10.1117/12.2510009)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskevivuite, Ugne, Baldassarre, Leonetta, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Ortolani, Michele and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) TuA4.1 - Mid-infrared Sensing with Ge on Si Waveguides (Invited). In: 2019 IEEE Photonics Society Summer Topical Meeting Series (SUM), Ft. Lauderdale, FL, USA, 08-10 Jul 2019, ISBN 9781728105970 (doi: 10.1109/PHOSST.2019.8795039)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskevicuite, U., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Baldassarre, L., Sorel, M. ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Ortolani, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) Towards a Mid-Infrared Lab-on-Chip Sensor using Ge-on-Si Waveguides. In: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 23-27 Jun 2019, ISBN 9781728104690 (doi: 10.1109/CLEOE-EQEC.2019.8871521)

2018

Fischer, M. P. et al. (2018) Plasmonic mid-infrared third harmonic generation in germanium nanoantennas. Light: Science and Applications, 7(1), 106. (doi: 10.1038/s41377-018-0108-8) (PMID:30564312) (PMCID:PMC6290006)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griškevičiūte, U., Baldassarre, L., Sorel, M. ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Ortolani, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2018) Low loss Ge-on-Si waveguides operating in the 8–14 µm atmospheric transmission window. Optics Express, 26(20), pp. 25667-25675. (doi: 10.1364/OE.26.025667)

Pellegrini, Giovanni, Baldassarre, Leonetta, Giliberti, Valeria, Frigerio, Jacopo, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Isella, Giovanni, Ortolani, Michele and Biagioni, Paolo (2018) Benchmarking the use of heavily-doped Ge for plasmonics and sensing in the mid-infrared. ACS Photonics, 5(9), pp. 3601-3607. (doi: 10.1021/acsphotonics.8b00438)

Bashir, A. et al. (2018) Interfacial sharpness and intermixing in a Ge-SiGe multiple quantum well structure. Journal of Applied Physics, 123(3), 035703. (doi: 10.1063/1.5001158)

Gallacher, K. et al. (2018) Components for Integrated Ge on Si for Mid-Infrared Photonic Sensors. In: 2018 IEEE Photonics Society Summer Topical Meeting Series (SUM), Waikoloa Village, HI, USA, 09-11 Jul 2018, pp. 177-178. ISBN 9781538653432 (doi: 10.1109/PHOSST.2018.8456761)

Ghisetti, Emanuele Alberto, Dumas, Derek, Kirdoda, Jarosław ORCID logoORCID: https://orcid.org/0000-0001-5316-4496, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross William ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Mirza, Muhammad M.A. ORCID logoORCID: https://orcid.org/0000-0002-1789-224X and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2018) Germanium on Silicon Single Photon Avalanche Detectors Using Silicon-on-Insulator Substrates. Integrated Optics: Devices, Materials, and Technologies XXII, San Francisco, CA, USA, 29 Jan - 01 Feb 2018. (doi: 10.1117/12.2290403)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griskeviciute, U., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Baldassarre, L. and Ortolani, M. (2018) Ge-on-Si Mid-Infrared Waveguides Operating up to 11 μm Wavelength. In: 2018 IEEE 15th International Conference on Group IV Photonics (GFP), Cancun, Mexico, 29-31 Aug 2018, pp. 137-138. ISBN 9781538653616 (doi: 10.1109/GROUP4.2018.8478757)

2017

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Dumas, D.C.S., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Jahandar, P., Myronov, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2017) Tensile Strained GeSn Mid-Infrared Light Emitters. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 49-50. ISBN 9781509065677 (doi: 10.1109/GROUP4.2017.8082190)

Frigerio, J. et al. (2017) Optical properties of highly n-doped germanium obtained by in situ doping and laser annealing. Journal of Physics D: Applied Physics, 50(46), 465103. (doi: 10.1088/1361-6463/aa8eca)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Dumas, D.C.S., Gallacher, K.F. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Jahandar, P., MacGregor, C., Myronov, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2017) Mid-infrared light emission > 3 µm wavelength from tensile strained GeSn microdisks. Optics Express, 25(21), pp. 25374-25385. (doi: 10.1364/OE.25.025374) (PMID:29041205)

Paul, D. J. et al. (2017) n-Ge on Si for Mid-Infrared Plasmonic Sensors. In: IEEE Photonics Society Summer Topical Meeting Series (SUM 2017), San Juan, Puerto Rico, 10-12 Jul 2017, pp. 125-126. ISBN 9781509065714 (doi: 10.1109/PHOSST.2017.8012682)

Fischer, M. P. et al. (2017) Mid-Infrared Third-Harmonic Emission from Heavily-Doped Germanium Plasmonic Nanoantennas. In: CLEO: QLES_Fundamental Science 2017, San Jose, CA, USA, 14-19 May 2017, FF1G.2. ISBN 9781943580279 (doi: 10.1364/CLEO_QELS.2017.FF1G.2)

Fischer, M. P. et al. (2017) Germanium Nanoantennas for Plasmon-enhanced Third Harmonic Generation in the Mid Infrared. In: CLEO/Europe - EQEC 2017, Munich, Germany, 25-29 Jun 2017, ISBN 9781509067367 (doi: 10.1109/CLEOE-EQEC.2017.8087670)

Frigerio, J. et al. (2017) Heavily-doped Germanium on Silicon with Activated Doping Exceeding 1020 cm−3 as an Alternative to Gold for Mid-infrared Plasmonics. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 9-10. ISBN 9781509065684 (doi: 10.1109/GROUP4.2017.8082170)

Gallacher, K. et al. (2017) Germanium-on-silicon Waveguides for Mid-infrared Photonic Sensing Chips. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 63-64. ISBN 9781509065684 (doi: 10.1109/GROUP4.2017.8082197)

Gallacher, K. et al. (2017) Mid-infrared n-Ge on Si Plasmonic Based Microbolometer Sensors. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 3-4. ISBN 9781509065684 (doi: 10.1109/GROUP4.2017.8082167)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Sorgi, Alessia, Giliberti, Valeria, Frigerio, Jacopo, Isella, Giovanni, Biagioni, Paolo, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Ortolani, Michele and Baldassarre, Leonetta (2017) Integrated Germanium-on-silicon Waveguides for Mid-infrared Photonic Sensing Chips. In: 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Cancun, Mexico, 27 Aug - 01 Sep 2017, ISBN 9781509060504 (doi: 10.1109/IRMMW-THz.2017.8067105)

2016

Baldassarre, L. et al. (2016) Mid-Infrared Plasmonic Platform Based on n-Doped Ge-on-Si: Molecular Sensing with Germanium Nano-Antennas on Si. In: 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016), Copenhagen, Denmark, 25-30 Sept 2016, ISBN 9781467384858 (doi: 10.1109/IRMMW-THz.2016.7758725)

Fischer, M. P. et al. (2016) Germanium Plasmonic Nanoantennas for Third-Harmonic Generation in the Mid Infrared. In: 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016), Copenhagen, Denmark, 25-30 Sept 2016, ISBN 9781467384858 (doi: 10.1109/IRMMW-THz.2016.7758692)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Ballabio, A., Frigerio, J., Bashir, A., MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, G., Ortolani, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Mid-Infrared Intersubband Absorption from P-Ge Quantum Wells on Si. In: 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016), Copenhagen, Denmark, 25-30 Sept 2016, ISBN 9781467384858 (doi: 10.1109/IRMMW-THz.2016.7758421)

Pellegrini, Giovanni, Baldassarre, Leonetta, Giliberti, Valeria, Frigerio, Jacopo, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Isella, Giovanni, Ortolani, Michele and Biagioni, Paolo (2016) Benchmarking the Use of Heavily-Doped Ge Against Noble Metals for Plasmonics and Sensing in the Mid-Infrared. In: 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016), Copenhagen, Denmark, 25-30 Sept 2016, ISBN 9781467384858 (doi: 10.1109/IRMMW-THz.2016.7758628)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Ballabio, A., Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Frigerio, J., Bashir, A., MacLaren, Ian ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, Giovanni, Ortolani, Michele and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Intersubband Absorption in p-Ge QWs on Si. In: IEEE 13th International Conference on Group IV Photonics, Shanghai, China, 24-26 Aug 2016, pp. 30-31. ISBN 9781509019038 (doi: 10.1109/GROUP4.2016.7739130)

Baldassarre, L. et al. (2016) Mid-infrared sensing using heavily doped germanium plasmonics on silicon substrates. ECS Transactions, 75(8), pp. 247-251. (doi: 10.1149/07508.0247ecst)

Ferre Llin, L. et al. (2016) The use of silicon-germanium superlattices for thermoelectric devices and microfabricated generators. ECS Transactions, 75(8), pp. 469-478. (doi: 10.1149/07508.0469ecst)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Ballabio, Andrea, Millar, Ross ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Frigerio, Jacopo, Bashir, Aneeqa, MacLaren, Ian ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, Giovanni, Ortolani, Michele and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Mid-infrared intersubband absorption from p-Ge quantum wells grown on Si substrates. ECS Transactions, 75(8), pp. 253-256. (doi: 10.1149/07508.0253ecst)

Millar, Ross ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, Jacopo, Ballabio, Andrea, Bashir, Aneeqa, MacLaren, Ian ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, Giovanni and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Engineering large in-plane tensile strains in Ge microdisks, microrings and racetrack optical cavities. ECS Transactions, 75(8), pp. 633-640. (doi: 10.1149/07508.0633ecst)

Frigerio, J. et al. (2016) Tunability of the dielectric function of heavily doped germanium thin films for mid-infrared plasmonics. Physical Review B, 94(8), 085202. (doi: 10.1103/PhysRevB.94.085202)

Pezzoli, F. et al. (2016) Disentangling nonradiative recombination processes in Ge micro-crystals on Si substrates. Applied Physics Letters, 108, 262103. (doi: 10.1063/1.4955020)

Gallacher, K. et al. (2016) Ge-on-Si photonics for mid-infrared sensing applications. MRS Advances, 1(48), pp. 3269-3279. (doi: 10.1557/adv.2016.391)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, J., Ballabio, A., Bashir, A., MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, G. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Analysis of Ge micro-cavities with in-plane tensile strains above 2%. Optics Express, 24(5), pp. 4365-4374. (doi: 10.1364/OE.24.004365)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Samarelli, A., Frigerio, J., Chrastina, D., Dieing, T., Isella, G. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Expanding the Ge emission wavelength to 2.25 μm with SixNy strain engineering. Thin Solid Films, 602, pp. 60-63. (doi: 10.1016/j.tsf.2015.07.017)

Samarelli, A., Frigerio, J., Sakat, E., Baldassarre, L., Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Finazzi, M., Isella, G., Ortolani, M., Biagioni, P. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Fabrication of mid-infrared plasmonic antennas based on heavily doped germanium thin films. Thin Solid Films, 602, pp. 52-55. (doi: 10.1016/j.tsf.2015.10.005)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Ballabio, A., Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Frigerio, J., Bashir, A., MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, G., Ortolani, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Mid-infrared intersubband absorption from p-Ge quantum wells grown on Si substrates. Applied Physics Letters, 108(9), 091114. (doi: 10.1063/1.4943145)

2015

Baldassarre, Leonetta, Sakat, Emilie, Frigerio, Jacopo, Samarelli, Antonio, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Calandrini, Eugenio, Isella, Giovanni, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Ortolani, Michele and Biagioni, Paolo (2015) Midinfrared plasmon-enhanced spectroscopy with germanium antennas on silicon substrates. Nano Letters, 15(11), pp. 7225-7231. (doi: 10.1021/acs.nanolett.5b03247) (PMID:26457387)

Frigerio, J. et al. (2015) Heavily phosphorous-doped Germanium thin films for mid-infrared plasmonics. 2015 IEEE 12th International Conference on Group IV Photonics (GFP), Vancouver, Canada, 26-28 Aug 2015. pp. 94-95. ISBN 9781479982554 (doi: 10.1109/Group4.2015.7305964)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Samarelli, A., Frigerio, J., Chrastina, D., Isella, G., Dieing, T. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2015) Extending the emission wavelength of Ge nanopillars to 2.25 μm using silicon nitride stressors. Optics Express, 23(14), pp. 18193-18202. (doi: 10.1364/OE.23.018193) (PMID:26191877)

Biagioni, P., Sakat, E., Baldassarre, L., Calandrini, E., Samarelli, A., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, J., Isella, G., Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 and Ortolani, M. (2015) Mid-infrared plasmonic resonances exploiting heavily-doped Ge on Si. Proceedings of the SPIE: The International Society for Optical Engineering, 9357, p. 93570. 93570. (doi: 10.1117/12.2084500)

Biagioni, P. et al. (2015) Group-IV midinfrared plasmonics. Journal of Nanophotonics, 9(1), 093789. (doi: 10.1117/1.JNP.9.093789)

Gallacher, K. et al. (2015) Mid-Infrared Intersubband Absorption in p-Ge/SiGe Quantum Wells Grown on Si. In: 2015 IEEE International Conference on Group IV Photonics (GFP), Vancouver, Canada, 26-28 Aug 2015, pp. 15-16. ISBN 9781479982547 (doi: 10.1109/group4.2015.7305931)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, J., Chrastina, D., Isella, G. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2015) Highly strained Ge on Si microdisks with silicon nitride stressors. In: 2015 IEEE 12th International Conference on Group IV Photonics (GFP), Vancouver, Canada, 26-28 Aug 2015, pp. 65-66. ISBN 9781479982547 (doi: 10.1109/group4.2015.7305948)

Ortolani, M. et al. (2015) Time- and Frequency-Resolved Electrodynamics of Germanium Nanoantennas for Mid-Infrared Plasmonics. In: 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Hong Kong, China, 23-28 Aug 2015, pp. 1-2. (doi: 10.1109/IRMMW-THz.2015.7327717)

2014

Dumas, D. C. S., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Rhead, S., Myronov, M., Leadley, D. R. and Paul, D. J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2014) Ge/SiGe quantum confined Stark effect electro-absorption modulation with low voltage swing at lambda = 1550 nm. Optics Express, 22(16), pp. 19284-19292. (doi: 10.1364/OE.22.019284)

Dumas, D.C.S., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Rhead, S., Myronov, M., Leadley, D.R. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2014) Ge/SiGe quantum confined Stark effect modulators with low voltage swing at lambda = 1550 nm. In: 2014 IEEE 11th International Conference on Group IV Photonics (GFP),, Paris, France, 27-29 Aug 2014, pp. 245-246. (doi: 10.1109/Group4.2014.6961946)

Frigerio, J. et al. (2014) Mid-infrared plasmonic germanium antennas on silicon. In: IEEE 11th International Conference on Group IV Photonics (GFP), Paris, France, 27-29 Aug 2014, pp. 27-28. (doi: 10.1109/Group4.2014.6962011)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Samarelli, A., Dumas, D.C.S., Frigerio, J., Chrastina, D., Isella, G. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2014) Process Induced Tensile Strain of Ge on Si Nanopillars by ICP-PECVD SiN Stressor Layers. In: IEEE 11th International Conference on Group IV Photonics (GFP), Paris, France, 27-29 Aug 2014, pp. 235-236. (doi: 10.1109/Group4.2014.6961941)

Dumas, D.C.S., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, R. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Myronov, M., Leadley, D.R. and Paul, D.J ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2014) Silver antimony Ohmic contacts to moderately doped n-type germanium. Applied Physics Letters, 104(16), p. 162101. (doi: 10.1063/1.4873127)

Al-Khalidi, A. ORCID logoORCID: https://orcid.org/0000-0003-3739-1204, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Khalid, A. ORCID logoORCID: https://orcid.org/0000-0002-4039-8282, Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 and Wasige, E. ORCID logoORCID: https://orcid.org/0000-0001-5014-342X (2014) 0.25 Ω-mm Ohmic contacts to AlN/GaN HEMT structure with in-situ SiN passivation. In: 7th Wide Band Gap Semiconductors and Components Workshop, Frascati, Italy, 11-12 Sep 2014,

Baldassarre, L. et al. (2014) Mid-Infrared Plasmonic Platform based on Heavily Doped Epitaxial Ge-on-Si: Retrieving the Optical Constants of Thin Ge Epilayers. In: 2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Tucson, AZ, USA, 14-19 Sep 2014, ISBN 9781479938773 (doi: 10.1109/IRMMW-THz.2014.6956438)

2013

Warburton, R.E. et al. (2013) Ge-on-Si single-photon avalanche diode detectors: design, modeling, fabrication, and characterization at wavelengths 1310 and 1550 nm. IEEE Transactions on Electron Devices, 60(11), pp. 3807-3813. (doi: 10.1109/TED.2013.2282712)

Velha, Philippe, Dumas, Derek C., Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Myronov, Maksyn, Leadley, David R. and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2013) Strained Germanium Nanostructures on Silicon Emitting at >2.2 µm Wavelength. In: 2013 IEEE 10th International Conference on Group IV Photonics (GFP), Seoul, South Korea, 23-30 Aug 2013, pp. 142-143. ISBN 9781467358040 (doi: 10.1109/Group4.2013.6644411)

Intermite, G. et al. (2013) Design and performance of a prototype mesa-geometry Ge-on-Si single-photon avalanche diode detector at 1310 nm and 1550 nm wavelengths. In: IEEE 10th International Conference on Group IV Photonics, Seoul, South Korea, 28-30 Aug 2013, pp. 132-133. (doi: 10.1109/Group4.2013.6644406)

2012

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Velha, P., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Myronov, M. and Leadley, D.R. (2012) Ohmic contacts to n-type germanium with low specific contact resistivity. Applied Physics Letters, 100(2), 022113. (doi: 10.1063/1.3676667)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Velha, P., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Myronov, M. and Leadley, D.R. (2012) Low specific ohmic contacts to n-type germanium using a low temperatrue NiGe process. ECS Transactions, 50(9), pp. 1081-1084. (doi: 10.1149/05009.1081ecst)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Velha, P., Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Cecchi, S., Frigerio, J., Chrastina, D. and Isella, G. (2012) 1.55 μm direct bandgap electroluminescence from strained n-Ge quantum wells grown on Si substrates. Applied Physics Letters, 101(21), p. 211101. (doi: 10.1063/1.4767138)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Velha, P., Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Frigerio, J., Chrastina, D. and Isella, G. (2012) 1.55 um electroluminescence from strained n-Ge quantum wells on silicon substrates. In: 2012 IEEE 9th International Conference on Group IV Photonics (GFP), San Diego, CA, 23-31 Aug 2012, (doi: 10.1109/GROUP4.2012.6324093)

Kelsall, R.W. et al. (2012) Germanium/silicon heterostructures for terahertz emission. ECS Transactions, 50(9), pp. 763-771.

Velha, P., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Dumas, D., Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Myronov, M. and Leadley, D.R. (2012) Long wavelength > 1.9 um germanium for optoelectronics using process induced strain. ECS Transactions, 50(9), pp. 779-782.

Velha, P., Gallacher, K., Dumas, D., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Myronov, M. and Leadley, D.R. (2012) Direct band-gap electroluminescence from strained n-doped Germanium diodes. In: 2012 Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, 6-11 May 2012, pp. 1-2.

Velha, P., Gallacher, K., Dumas, D., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Myronov, M. and Leadley, D.R. (2012) Tuning the electroluminescence of n-Ge LEDs using process induced strain. In: 2012 IEEE 9th International Conference on Group IV Photonics (GFP), San Diego, CA, 23-31 Aug 2012, pp. 337-339. (doi: 10.1109/GROUP4.2012.6324179)

Velha, P., Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Dumas, D., Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Myronov, M. and Leadley, D.R. (2012) Direct Band-gap Electroluminescence from Strained n-Ge Light Emmitting Diodes. ECS Transactions, 50(9), pp. 305-308.

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Number of items: 93.

Articles

Di Gaetano, E. ORCID logoORCID: https://orcid.org/0000-0002-6968-7504, Keliehor, B., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griffin, P.F., Sorel, M. ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Riis, E. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2024) 778.1 nm distributed feedback lasers for Rb two-photon atomic systems with sub-4 kHz linewidths. APL Photonics, 9(5), 056114. (doi: 10.1063/5.0191088)

Dyer, S., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Hawley, U., Bregazzi, A., Griffin, P.F., Arnold, A.S., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Riis, E. and McGilligan, J.P. (2023) Chip-scale packages for a tunable wavelength reference and laser cooling platform. Physical Review Applied, 19(4), 044015. (doi: 10.1103/PhysRevApplied.19.044015)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griffin, Paul F., Riis, Erling, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2022) Silicon nitride waveguide polarization rotator and polarization beam splitter for chip-scale atomic systems. APL Photonics, 7(4), 046101. (doi: 10.1063/5.0077738)

McGilligan, J. P., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griffin, P. F., Paul, D. J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Arnold, A. S. and Riis, E. (2022) Micro-fabricated components for cold atom sensors. Review of Scientific Instruments, 93, 091101. (doi: 10.1063/5.0101628) (PMID:36182455)

Fischer, Marco P., Maccaferri, Nicolò, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, Jacopo, Pellegrini, Giovanni, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Isella, Giovanni, Leitenstorfer, Alfred, Biagioni, Paolo and Brida, Daniele (2021) Field-resolved detection of the temporal response of a single plasmonic antenna in the mid-infrared. Optica, 8(6), pp. 898-903. (doi: 10.1364/OPTICA.420683)

Gallacher, K. et al. (2020) Characterization of integrated waveguides by atomic-force-microscopy-assisted mid-infrared imaging and spectroscopy. Optics Express, 28(15), pp. 22186-22199. (doi: 10.1364/OE.393748)

Gallacher, K. et al. (2020) Design and simulation of losses in Ge/SiGe terahertz quantum cascade laser waveguides. Optics Express, 28(4), pp. 4786-4800. (doi: 10.1364/OE.384993)

Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Bayley, Joseph C., McBrearty, Euan ORCID logoORCID: https://orcid.org/0000-0002-2898-780X, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Hild, Stefan ORCID logoORCID: https://orcid.org/0000-0001-9221-6009 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) 1.4 million Q factor Si₃N₄ micro-ring resonator at 780 nm wavelength for chip-scale atomic systems. Optics Express, 28(3), pp. 4010-4020. (doi: 10.1364/OE.381224)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskeviciute, Ugne, Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Baldassarre, Leonetta, Ortolani, Michele, Soref, Richard and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) Ultra-broadband mid-infrared Ge-on-Si waveguide polarization rotator. APL Photonics, 5(2), 026102. (doi: 10.1063/1.5134973)

Griskeviciute, Ugne, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Valente, Joao ORCID logoORCID: https://orcid.org/0000-0002-5917-8917 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) Ge-on-Si waveguides for sensing in the molecular fingerprint regime. Optics Express, 28(4), pp. 5749-5757. (doi: 10.1364/OE.382356)

Bashir, Aneeqa, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Darbal, Amith D., Stroud, Robert, Ballabio, Andrea, Frigerio, Jacopo, Isella, Giovanni and MacLaren, Ian ORCID logoORCID: https://orcid.org/0000-0002-5334-3010 (2019) Strain analysis of Ge micro disk using precession electron diffraction. Journal of Applied Physics, 126, 235701. (doi: 10.1063/1.5113761)

Fischer, M. P. et al. (2018) Plasmonic mid-infrared third harmonic generation in germanium nanoantennas. Light: Science and Applications, 7(1), 106. (doi: 10.1038/s41377-018-0108-8) (PMID:30564312) (PMCID:PMC6290006)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griškevičiūte, U., Baldassarre, L., Sorel, M. ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Ortolani, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2018) Low loss Ge-on-Si waveguides operating in the 8–14 µm atmospheric transmission window. Optics Express, 26(20), pp. 25667-25675. (doi: 10.1364/OE.26.025667)

Pellegrini, Giovanni, Baldassarre, Leonetta, Giliberti, Valeria, Frigerio, Jacopo, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Isella, Giovanni, Ortolani, Michele and Biagioni, Paolo (2018) Benchmarking the use of heavily-doped Ge for plasmonics and sensing in the mid-infrared. ACS Photonics, 5(9), pp. 3601-3607. (doi: 10.1021/acsphotonics.8b00438)

Bashir, A. et al. (2018) Interfacial sharpness and intermixing in a Ge-SiGe multiple quantum well structure. Journal of Applied Physics, 123(3), 035703. (doi: 10.1063/1.5001158)

Frigerio, J. et al. (2017) Optical properties of highly n-doped germanium obtained by in situ doping and laser annealing. Journal of Physics D: Applied Physics, 50(46), 465103. (doi: 10.1088/1361-6463/aa8eca)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Dumas, D.C.S., Gallacher, K.F. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Jahandar, P., MacGregor, C., Myronov, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2017) Mid-infrared light emission > 3 µm wavelength from tensile strained GeSn microdisks. Optics Express, 25(21), pp. 25374-25385. (doi: 10.1364/OE.25.025374) (PMID:29041205)

Baldassarre, L. et al. (2016) Mid-infrared sensing using heavily doped germanium plasmonics on silicon substrates. ECS Transactions, 75(8), pp. 247-251. (doi: 10.1149/07508.0247ecst)

Ferre Llin, L. et al. (2016) The use of silicon-germanium superlattices for thermoelectric devices and microfabricated generators. ECS Transactions, 75(8), pp. 469-478. (doi: 10.1149/07508.0469ecst)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Ballabio, Andrea, Millar, Ross ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Frigerio, Jacopo, Bashir, Aneeqa, MacLaren, Ian ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, Giovanni, Ortolani, Michele and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Mid-infrared intersubband absorption from p-Ge quantum wells grown on Si substrates. ECS Transactions, 75(8), pp. 253-256. (doi: 10.1149/07508.0253ecst)

Millar, Ross ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, Jacopo, Ballabio, Andrea, Bashir, Aneeqa, MacLaren, Ian ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, Giovanni and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Engineering large in-plane tensile strains in Ge microdisks, microrings and racetrack optical cavities. ECS Transactions, 75(8), pp. 633-640. (doi: 10.1149/07508.0633ecst)

Frigerio, J. et al. (2016) Tunability of the dielectric function of heavily doped germanium thin films for mid-infrared plasmonics. Physical Review B, 94(8), 085202. (doi: 10.1103/PhysRevB.94.085202)

Pezzoli, F. et al. (2016) Disentangling nonradiative recombination processes in Ge micro-crystals on Si substrates. Applied Physics Letters, 108, 262103. (doi: 10.1063/1.4955020)

Gallacher, K. et al. (2016) Ge-on-Si photonics for mid-infrared sensing applications. MRS Advances, 1(48), pp. 3269-3279. (doi: 10.1557/adv.2016.391)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, J., Ballabio, A., Bashir, A., MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, G. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Analysis of Ge micro-cavities with in-plane tensile strains above 2%. Optics Express, 24(5), pp. 4365-4374. (doi: 10.1364/OE.24.004365)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Samarelli, A., Frigerio, J., Chrastina, D., Dieing, T., Isella, G. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Expanding the Ge emission wavelength to 2.25 μm with SixNy strain engineering. Thin Solid Films, 602, pp. 60-63. (doi: 10.1016/j.tsf.2015.07.017)

Samarelli, A., Frigerio, J., Sakat, E., Baldassarre, L., Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Finazzi, M., Isella, G., Ortolani, M., Biagioni, P. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Fabrication of mid-infrared plasmonic antennas based on heavily doped germanium thin films. Thin Solid Films, 602, pp. 52-55. (doi: 10.1016/j.tsf.2015.10.005)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Ballabio, A., Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Frigerio, J., Bashir, A., MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, G., Ortolani, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Mid-infrared intersubband absorption from p-Ge quantum wells grown on Si substrates. Applied Physics Letters, 108(9), 091114. (doi: 10.1063/1.4943145)

Baldassarre, Leonetta, Sakat, Emilie, Frigerio, Jacopo, Samarelli, Antonio, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Calandrini, Eugenio, Isella, Giovanni, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Ortolani, Michele and Biagioni, Paolo (2015) Midinfrared plasmon-enhanced spectroscopy with germanium antennas on silicon substrates. Nano Letters, 15(11), pp. 7225-7231. (doi: 10.1021/acs.nanolett.5b03247) (PMID:26457387)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Samarelli, A., Frigerio, J., Chrastina, D., Isella, G., Dieing, T. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2015) Extending the emission wavelength of Ge nanopillars to 2.25 μm using silicon nitride stressors. Optics Express, 23(14), pp. 18193-18202. (doi: 10.1364/OE.23.018193) (PMID:26191877)

Biagioni, P., Sakat, E., Baldassarre, L., Calandrini, E., Samarelli, A., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, J., Isella, G., Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 and Ortolani, M. (2015) Mid-infrared plasmonic resonances exploiting heavily-doped Ge on Si. Proceedings of the SPIE: The International Society for Optical Engineering, 9357, p. 93570. 93570. (doi: 10.1117/12.2084500)

Biagioni, P. et al. (2015) Group-IV midinfrared plasmonics. Journal of Nanophotonics, 9(1), 093789. (doi: 10.1117/1.JNP.9.093789)

Dumas, D. C. S., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Rhead, S., Myronov, M., Leadley, D. R. and Paul, D. J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2014) Ge/SiGe quantum confined Stark effect electro-absorption modulation with low voltage swing at lambda = 1550 nm. Optics Express, 22(16), pp. 19284-19292. (doi: 10.1364/OE.22.019284)

Dumas, D.C.S., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, R. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Myronov, M., Leadley, D.R. and Paul, D.J ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2014) Silver antimony Ohmic contacts to moderately doped n-type germanium. Applied Physics Letters, 104(16), p. 162101. (doi: 10.1063/1.4873127)

Warburton, R.E. et al. (2013) Ge-on-Si single-photon avalanche diode detectors: design, modeling, fabrication, and characterization at wavelengths 1310 and 1550 nm. IEEE Transactions on Electron Devices, 60(11), pp. 3807-3813. (doi: 10.1109/TED.2013.2282712)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Velha, P., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Myronov, M. and Leadley, D.R. (2012) Ohmic contacts to n-type germanium with low specific contact resistivity. Applied Physics Letters, 100(2), 022113. (doi: 10.1063/1.3676667)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Velha, P., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Myronov, M. and Leadley, D.R. (2012) Low specific ohmic contacts to n-type germanium using a low temperatrue NiGe process. ECS Transactions, 50(9), pp. 1081-1084. (doi: 10.1149/05009.1081ecst)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Velha, P., Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Cecchi, S., Frigerio, J., Chrastina, D. and Isella, G. (2012) 1.55 μm direct bandgap electroluminescence from strained n-Ge quantum wells grown on Si substrates. Applied Physics Letters, 101(21), p. 211101. (doi: 10.1063/1.4767138)

Kelsall, R.W. et al. (2012) Germanium/silicon heterostructures for terahertz emission. ECS Transactions, 50(9), pp. 763-771.

Velha, P., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Dumas, D., Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Myronov, M. and Leadley, D.R. (2012) Long wavelength > 1.9 um germanium for optoelectronics using process induced strain. ECS Transactions, 50(9), pp. 779-782.

Velha, P., Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Dumas, D., Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Myronov, M. and Leadley, D.R. (2012) Direct Band-gap Electroluminescence from Strained n-Ge Light Emmitting Diodes. ECS Transactions, 50(9), pp. 305-308.

Conference or Workshop Item

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griffin, Paul F., Riis, Erling, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2022) Silicon Nitride Waveguide Polarization Components for Rubidium Saturated Absorption Spectroscopy On-Chip. Conference on Lasers and Electro-Optics (CLEO 2022), San Jose, California, USA, 15-20 May 2022. ISBN 9781957171050

Fischer, Marco P., Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, Jacopo, Pellegrini, Giovanni, Isella, Giovanni, Leitenstorfer, Alfred, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Biagioni, Paolo and Brida, Daniele (2019) Field-Resolved Detection of the Temporal Response of a Mid-Infrared Plasmonic Antenna. CLEO: QELS_Fundamental Science 2019, San Jose, CA, USA, 05-10 May 2019. ISBN 9781943580576

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Sinclair, M. ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Sharp, O., Mirando, F., Ternent, G., Mills, G., Casey, B. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) Integrated DFB Lasers on Si3N4 Photonic Platform for Chip-Scale Atomic Systems. CLEO: Science and Innovations 2019, San Jose, CA, USA, 05-10 May 2019. ISBN 9781943580576 (doi: 10.1364/CLEO_SI.2019.STu4O.7)

Ghisetti, Emanuele Alberto, Dumas, Derek, Kirdoda, Jarosław ORCID logoORCID: https://orcid.org/0000-0001-5316-4496, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross William ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Mirza, Muhammad M.A. ORCID logoORCID: https://orcid.org/0000-0002-1789-224X and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2018) Germanium on Silicon Single Photon Avalanche Detectors Using Silicon-on-Insulator Substrates. Integrated Optics: Devices, Materials, and Technologies XXII, San Francisco, CA, USA, 29 Jan - 01 Feb 2018. (doi: 10.1117/12.2290403)

Frigerio, J. et al. (2015) Heavily phosphorous-doped Germanium thin films for mid-infrared plasmonics. 2015 IEEE 12th International Conference on Group IV Photonics (GFP), Vancouver, Canada, 26-28 Aug 2015. pp. 94-95. ISBN 9781479982554 (doi: 10.1109/Group4.2015.7305964)

Conference Proceedings

Januszewicz, J. et al. (2024) Optical Phased Array for Sub-Doppler Spectroscopy of the Rubidium D2 Absorption Line. In: 2024 IEEE Photonics Conference (IPC), Rome, Italy, 10-14 Nov 2024, pp. 1-2. ISBN 9798350361957 (doi: 10.1109/ipc60965.2024.10799735)

Hawley, Ugne, Januszewicz, Jeremi, McConkey, Zack, Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Di Gaetano, Eugenio ORCID logoORCID: https://orcid.org/0000-0002-6968-7504, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2024) Integrating MEMS and Silicon-Nitride Photonic Integrated Circuits for Atomic Systems. In: 2024 IEEE Photonics Society Summer Topicals Meeting Series (SUM), Bridgetown, Barbados, 15-17 Jul 2024, ISBN 9798350393873 (doi: 10.1109/SUM60964.2024.10614497)

McConkey, Zack P., Hawley, Ugne, Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Januszewicz, Jeremi, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2024) Quartz Circular Polarising Optical Window at 80°C for MEMS Vapour Cells. In: 2024 IEEE Photonics Society Summer Topicals Meeting Series (SUM), Bridgetown, Barbados, 15-17 Jul 2024, ISBN 9798350393873 (doi: 10.1109/SUM60964.2024.10614545)

Gallacher, K. et al. (2023) Silicon-Nitride Photonic Integrated Circuits for Atomic Systems. In: IEEE Photonics Society Summer Topicals Meetings Series (SUM 2023), Giardini Naxos, Italy, 17-19 July 2023, ISBN 9798350347210 (doi: 10.1109/SUM57928.2023.10224366)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griffin, Paul F., Riis, Erling, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2022) Si3 N4 Waveguide Polarization Components for Atomic Systems. In: 2022 IEEE Photonics Conference (IPC), Vancouver, BC, Canada, 13-17 Nov 2022, ISBN 9781665434874 (doi: 10.1109/IPC53466.2022.9975656)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Grickeviciute, Ugne, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2021) Ge on Si Photonics Platform for Mid-Infrared Sensors. In: 2021 IEEE Photonics Society Summer Topicals Meeting Series (SUM), Cabo San Lucas, Mexico, 19-21 July 2021, ISBN 9781665416009 (doi: 10.1109/SUM48717.2021.9505799)

Frigerio, J. et al. (2021) Ge-on-Si Based Mid-infrared Plasmonics. In: Silicon Photonics XVI, 06-12 Mar 2021, 116910M. (doi: 10.1117/12.2576175)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskeviciute, Ugne, Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Baldassarre, Leonetta, Ortolani, Michele, Soref, Richard and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) Ge-on-Si Waveguide Polarization Rotator Operating in the 8-14 µm Atmospheric Transmission Window. In: CLEO: Applications and Technology 2020, Washington, DC, USA, 10-15 May 2020, STh4L.8. ISBN 9781943580767 (doi: 10.1364/CLEO_SI.2020.STh4L.8)

Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Bayley, Joseph C. ORCID logoORCID: https://orcid.org/0000-0003-2306-4106, McBrearty, Euan ORCID logoORCID: https://orcid.org/0000-0002-2898-780X, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Hild, Stefan ORCID logoORCID: https://orcid.org/0000-0001-9221-6009 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) 1.4 Million Q-Factor 780 nm Wavelength Si3N4 Micro-rings for Chip-Scale Atomic Systems. In: CLEO: Applications and Technology 2020, Washington, DC, USA, 10-15 May 2020, STu4O.8. ISBN 9781943580767 (doi: 10.1364/CLEO_SI.2020.STu4O.8)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskeviciute, Ugne, Sinclair, Martin ORCID logoORCID: https://orcid.org/0000-0002-8110-2919, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Baldassarre, Leonetta, Ortolani, Michele, Soref, Richard and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2020) Ge-on-Si Mid-Infrared Waveguide Platform for Molecular Fingerprint Sensing. In: 22nd International Conference on Transparent Optical Networks (ICTON), Bari, Italy, 19-23 July 2020, ISBN 9781728184241 (doi: 10.1109/ICTON51198.2020.9203237)

Sinclair, M. et al. (2019) High-Q Si3N4 Ring Resonators for Locking 780nm GaAs-Based Distributed Feedback Laser. In: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 23-27 Jun 2019, ISBN 9781728104690 (doi: 10.1109/CLEOE-EQEC.2019.8872725)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griskeviciute, Ugne, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484 and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) Ultra Broadband Mid-Infrared Ge-on-Si Polarization Rotator. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853922)

Griskeviciute, Ugne, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 and MacGilp, Iain (2019) Understanding the Sidewall Dependence of Loss for Ge-on-Si Waveguides in the Mid-Infrared. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853945)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskeviciute, U., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Sorel, M. ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Baldassarre, L. and Ortolani, M. (2019) Molecular Fingerprint Sensing Using Ge-on-Si Waveguides. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853881)

Griškevičiūtė, U., Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Baldassarre, L., Sorel, M. ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Ortolani, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) Fingerprint Mid-Infrared Sensing With Germanium on Silicon Waveguides. In: CLEO: Science and Innovations 2019, San Jose, CA, USA, 05-10 May 2019, ISBN 9781943580576 (doi: 10.1364/CLEO_SI.2019.STh1N.2)

Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griskeviciute, Ugne, Baldassarre, Leonetta, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Ortolani, Michele and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) Low Loss Germanium-on-Silicon Waveguides for Integrated Mid-Infrared Photonics. In: SPIE OPTO 2019, San Francisco, CA, USA, 02-07 Feb 2019, 109230S. (doi: 10.1117/12.2510009)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskevivuite, Ugne, Baldassarre, Leonetta, Sorel, Marc ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Ortolani, Michele and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) TuA4.1 - Mid-infrared Sensing with Ge on Si Waveguides (Invited). In: 2019 IEEE Photonics Society Summer Topical Meeting Series (SUM), Ft. Lauderdale, FL, USA, 08-10 Jul 2019, ISBN 9781728105970 (doi: 10.1109/PHOSST.2019.8795039)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Griskevicuite, U., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Baldassarre, L., Sorel, M. ORCID logoORCID: https://orcid.org/0000-0001-8365-4496, Ortolani, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2019) Towards a Mid-Infrared Lab-on-Chip Sensor using Ge-on-Si Waveguides. In: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 23-27 Jun 2019, ISBN 9781728104690 (doi: 10.1109/CLEOE-EQEC.2019.8871521)

Gallacher, K. et al. (2018) Components for Integrated Ge on Si for Mid-Infrared Photonic Sensors. In: 2018 IEEE Photonics Society Summer Topical Meeting Series (SUM), Waikoloa Village, HI, USA, 09-11 Jul 2018, pp. 177-178. ISBN 9781538653432 (doi: 10.1109/PHOSST.2018.8456761)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Griskeviciute, U., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Baldassarre, L. and Ortolani, M. (2018) Ge-on-Si Mid-Infrared Waveguides Operating up to 11 μm Wavelength. In: 2018 IEEE 15th International Conference on Group IV Photonics (GFP), Cancun, Mexico, 29-31 Aug 2018, pp. 137-138. ISBN 9781538653616 (doi: 10.1109/GROUP4.2018.8478757)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Dumas, D.C.S., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Jahandar, P., Myronov, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2017) Tensile Strained GeSn Mid-Infrared Light Emitters. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 49-50. ISBN 9781509065677 (doi: 10.1109/GROUP4.2017.8082190)

Paul, D. J. et al. (2017) n-Ge on Si for Mid-Infrared Plasmonic Sensors. In: IEEE Photonics Society Summer Topical Meeting Series (SUM 2017), San Juan, Puerto Rico, 10-12 Jul 2017, pp. 125-126. ISBN 9781509065714 (doi: 10.1109/PHOSST.2017.8012682)

Fischer, M. P. et al. (2017) Mid-Infrared Third-Harmonic Emission from Heavily-Doped Germanium Plasmonic Nanoantennas. In: CLEO: QLES_Fundamental Science 2017, San Jose, CA, USA, 14-19 May 2017, FF1G.2. ISBN 9781943580279 (doi: 10.1364/CLEO_QELS.2017.FF1G.2)

Fischer, M. P. et al. (2017) Germanium Nanoantennas for Plasmon-enhanced Third Harmonic Generation in the Mid Infrared. In: CLEO/Europe - EQEC 2017, Munich, Germany, 25-29 Jun 2017, ISBN 9781509067367 (doi: 10.1109/CLEOE-EQEC.2017.8087670)

Frigerio, J. et al. (2017) Heavily-doped Germanium on Silicon with Activated Doping Exceeding 1020 cm−3 as an Alternative to Gold for Mid-infrared Plasmonics. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 9-10. ISBN 9781509065684 (doi: 10.1109/GROUP4.2017.8082170)

Gallacher, K. et al. (2017) Germanium-on-silicon Waveguides for Mid-infrared Photonic Sensing Chips. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 63-64. ISBN 9781509065684 (doi: 10.1109/GROUP4.2017.8082197)

Gallacher, K. et al. (2017) Mid-infrared n-Ge on Si Plasmonic Based Microbolometer Sensors. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 3-4. ISBN 9781509065684 (doi: 10.1109/GROUP4.2017.8082167)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Sorgi, Alessia, Giliberti, Valeria, Frigerio, Jacopo, Isella, Giovanni, Biagioni, Paolo, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Ortolani, Michele and Baldassarre, Leonetta (2017) Integrated Germanium-on-silicon Waveguides for Mid-infrared Photonic Sensing Chips. In: 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Cancun, Mexico, 27 Aug - 01 Sep 2017, ISBN 9781509060504 (doi: 10.1109/IRMMW-THz.2017.8067105)

Baldassarre, L. et al. (2016) Mid-Infrared Plasmonic Platform Based on n-Doped Ge-on-Si: Molecular Sensing with Germanium Nano-Antennas on Si. In: 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016), Copenhagen, Denmark, 25-30 Sept 2016, ISBN 9781467384858 (doi: 10.1109/IRMMW-THz.2016.7758725)

Fischer, M. P. et al. (2016) Germanium Plasmonic Nanoantennas for Third-Harmonic Generation in the Mid Infrared. In: 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016), Copenhagen, Denmark, 25-30 Sept 2016, ISBN 9781467384858 (doi: 10.1109/IRMMW-THz.2016.7758692)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Ballabio, A., Frigerio, J., Bashir, A., MacLaren, I. ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, G., Ortolani, M. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Mid-Infrared Intersubband Absorption from P-Ge Quantum Wells on Si. In: 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016), Copenhagen, Denmark, 25-30 Sept 2016, ISBN 9781467384858 (doi: 10.1109/IRMMW-THz.2016.7758421)

Pellegrini, Giovanni, Baldassarre, Leonetta, Giliberti, Valeria, Frigerio, Jacopo, Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Isella, Giovanni, Ortolani, Michele and Biagioni, Paolo (2016) Benchmarking the Use of Heavily-Doped Ge Against Noble Metals for Plasmonics and Sensing in the Mid-Infrared. In: 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016), Copenhagen, Denmark, 25-30 Sept 2016, ISBN 9781467384858 (doi: 10.1109/IRMMW-THz.2016.7758628)

Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Ballabio, A., Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Frigerio, J., Bashir, A., MacLaren, Ian ORCID logoORCID: https://orcid.org/0000-0002-5334-3010, Isella, Giovanni, Ortolani, Michele and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2016) Intersubband Absorption in p-Ge QWs on Si. In: IEEE 13th International Conference on Group IV Photonics, Shanghai, China, 24-26 Aug 2016, pp. 30-31. ISBN 9781509019038 (doi: 10.1109/GROUP4.2016.7739130)

Gallacher, K. et al. (2015) Mid-Infrared Intersubband Absorption in p-Ge/SiGe Quantum Wells Grown on Si. In: 2015 IEEE International Conference on Group IV Photonics (GFP), Vancouver, Canada, 26-28 Aug 2015, pp. 15-16. ISBN 9781479982547 (doi: 10.1109/group4.2015.7305931)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Frigerio, J., Chrastina, D., Isella, G. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2015) Highly strained Ge on Si microdisks with silicon nitride stressors. In: 2015 IEEE 12th International Conference on Group IV Photonics (GFP), Vancouver, Canada, 26-28 Aug 2015, pp. 65-66. ISBN 9781479982547 (doi: 10.1109/group4.2015.7305948)

Ortolani, M. et al. (2015) Time- and Frequency-Resolved Electrodynamics of Germanium Nanoantennas for Mid-Infrared Plasmonics. In: 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Hong Kong, China, 23-28 Aug 2015, pp. 1-2. (doi: 10.1109/IRMMW-THz.2015.7327717)

Dumas, D.C.S., Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Rhead, S., Myronov, M., Leadley, D.R. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2014) Ge/SiGe quantum confined Stark effect modulators with low voltage swing at lambda = 1550 nm. In: 2014 IEEE 11th International Conference on Group IV Photonics (GFP),, Paris, France, 27-29 Aug 2014, pp. 245-246. (doi: 10.1109/Group4.2014.6961946)

Frigerio, J. et al. (2014) Mid-infrared plasmonic germanium antennas on silicon. In: IEEE 11th International Conference on Group IV Photonics (GFP), Paris, France, 27-29 Aug 2014, pp. 27-28. (doi: 10.1109/Group4.2014.6962011)

Millar, R.W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Samarelli, A., Dumas, D.C.S., Frigerio, J., Chrastina, D., Isella, G. and Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2014) Process Induced Tensile Strain of Ge on Si Nanopillars by ICP-PECVD SiN Stressor Layers. In: IEEE 11th International Conference on Group IV Photonics (GFP), Paris, France, 27-29 Aug 2014, pp. 235-236. (doi: 10.1109/Group4.2014.6961941)

Al-Khalidi, A. ORCID logoORCID: https://orcid.org/0000-0003-3739-1204, Gallacher, K. ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Khalid, A. ORCID logoORCID: https://orcid.org/0000-0002-4039-8282, Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 and Wasige, E. ORCID logoORCID: https://orcid.org/0000-0001-5014-342X (2014) 0.25 Ω-mm Ohmic contacts to AlN/GaN HEMT structure with in-situ SiN passivation. In: 7th Wide Band Gap Semiconductors and Components Workshop, Frascati, Italy, 11-12 Sep 2014,

Baldassarre, L. et al. (2014) Mid-Infrared Plasmonic Platform based on Heavily Doped Epitaxial Ge-on-Si: Retrieving the Optical Constants of Thin Ge Epilayers. In: 2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Tucson, AZ, USA, 14-19 Sep 2014, ISBN 9781479938773 (doi: 10.1109/IRMMW-THz.2014.6956438)

Velha, Philippe, Dumas, Derek C., Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Myronov, Maksyn, Leadley, David R. and Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530 (2013) Strained Germanium Nanostructures on Silicon Emitting at >2.2 µm Wavelength. In: 2013 IEEE 10th International Conference on Group IV Photonics (GFP), Seoul, South Korea, 23-30 Aug 2013, pp. 142-143. ISBN 9781467358040 (doi: 10.1109/Group4.2013.6644411)

Intermite, G. et al. (2013) Design and performance of a prototype mesa-geometry Ge-on-Si single-photon avalanche diode detector at 1310 nm and 1550 nm wavelengths. In: IEEE 10th International Conference on Group IV Photonics, Seoul, South Korea, 28-30 Aug 2013, pp. 132-133. (doi: 10.1109/Group4.2013.6644406)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Velha, P., Paul, D. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Frigerio, J., Chrastina, D. and Isella, G. (2012) 1.55 um electroluminescence from strained n-Ge quantum wells on silicon substrates. In: 2012 IEEE 9th International Conference on Group IV Photonics (GFP), San Diego, CA, 23-31 Aug 2012, (doi: 10.1109/GROUP4.2012.6324093)

Velha, P., Gallacher, K., Dumas, D., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Myronov, M. and Leadley, D.R. (2012) Direct band-gap electroluminescence from strained n-doped Germanium diodes. In: 2012 Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, 6-11 May 2012, pp. 1-2.

Velha, P., Gallacher, K., Dumas, D., Paul, D.J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Myronov, M. and Leadley, D.R. (2012) Tuning the electroluminescence of n-Ge LEDs using process induced strain. In: 2012 IEEE 9th International Conference on Group IV Photonics (GFP), San Diego, CA, 23-31 Aug 2012, pp. 337-339. (doi: 10.1109/GROUP4.2012.6324179)

Gallacher, Kevin ORCID logoORCID: https://orcid.org/0000-0002-4733-3940, Millar, Ross W. ORCID logoORCID: https://orcid.org/0000-0002-3299-2484, Paul, Douglas J. ORCID logoORCID: https://orcid.org/0000-0001-7402-8530, Mirando, Francesco, Ternent, Gary, Mills, Gordon and Casey, Brendan Distributed Feedback Lasers Operating at 780 nm Wavelength Integrated on Si Substrates for Chip-scale Atomic Systems. In: 2018 IEEE 15th International Conference on Group IV Photonics (GFP), Cancun, Mexico, 29-31 Aug 2018, pp. 67-68. ISBN 9781538653616 (doi: 10.1109/GROUP4.2018.8478720)

This list was generated on Sat Jun 14 07:31:10 2025 BST.

Research datasets

Jump to: 2020
Number of items: 2.

2020

Griskeviciute, U., Millar, R. , Gallacher, K. , Valente, J. and Paul, D. (2020) Ge-on-Si waveguides for sensing in the molecular fingerprint regime. [Data Collection]

Paul, D. , Gallacher, K. , Rew, S., Ortolani, M., Ciano, C., Baldassarre, L., Virgillio, M., Scalari, G., Faist, J., Di Gaspare, L., De Seta, M., Capellini, G., Grange, T. and Birner, S. (2020) Design and simulation of losses in Ge/SiGe terahertz quantum cascade laser waveguides. [Data Collection]

This list was generated on Sun Jun 15 09:28:54 2025 BST.