Dr Johannes Courtial
- Senior Lecturer (Physics & Astronomy)
telephone:
01413307721
email:
Johannes.Courtial@glasgow.ac.uk
pronouns:
He/him/his
R234e Level 2, Physics & Astronomy, Kelvin Building, Glasgow G12 8QQ
https://orcid.org/0000-0002-5990-7972Research interests
My research is on novel optical components for controlling light. Currently, I work mostly on pixellated optical components that allow light rays to be refracted in novel ways that appear (but aren't actually) "forbidden" by wave optics, thus opening up new possibilities.
Specifically, I am developing spectacles designed to treat a range of eye conditions that affect a huge number of people worldwide, often with very severe consequences. The hope is that our work can help the people suffering from these conditions, and as the number of affected people is so huge my work has the potential to significantly improve many people's lives.
My novel optical components are also an opportunity to do "fun" things (well, fun for those who like this sort of thing) such as designing invisibility cloaks and optical wormholes using my novel optical components. This work is largely theoretical in nature.
Previously I have invented a device for sorting individual photons according to their orbital angular momentum; pioneered algorithms for shaping a light beam's 3D intensity distribution (which is relevant to a number of fields, for example optical trapping, which other people in the group do in the lab); and dabbled with optical resonators, most notably resonators with fractal eigenmodes (which are, sort of, analogous to video feedback; my mugshot shows me "doing" video feedback.)
I am the Features Editor of the Journal of the Optical Society of America A. Since 2017, I am a Fellow of the Optical Society (OSA).
In May 2012, I appeared as some form of expert on the BBC programme Coast (Series 7, Episode 1), trying to explain an atmospheric phenomenon called the "green flash".
researcherID: B-4597-2009
Publications
2023
Courtial, J. , Bělin, J. , Soboňa, M., Locher, M. and Tyc, T. (2023) Shifty invisibility cloaks. Optics Express, 32(1), pp. 11-25. (doi: 10.1364/OE.500512) (PMID:38175042)
2022
Bělín, J. , Ferenczi, G. and Courtial, J. (2022) Skew-lens image rotator. Optics Express, 30(15), pp. 25958-25973. (doi: 10.1364/OE.458158) (PMID:36236795)
2021
Bělín, J. , Courtial, J. and Tyc, T. (2021) Lens stars and Platonic lenses. Optics Express, 29(25), pp. 42055-42074. (doi: 10.1364/OE.442825)
2020
Chen, H., Tao, S., Bělín, J. , Courtial, J. and Miao, R.-X. (2020) Transformation cosmology. Physical Review A: Atomic, Molecular and Optical Physics, 102(2), 023528. (doi: 10.1103/PhysRevA.102.023528)
Tyc, T., Belin, J. , Oxburgh, S., White, C. D., Cowie, E. N. and Courtial, J. (2020) Combinations of generalized lenses that satisfy the edge-imaging condition of transformation optics. Journal of the Optical Society of America A: Optics Image Science and Vision, 37(2), pp. 305-315. (doi: 10.1364/JOSAA.37.000305) (PMID:32118911)
Gray, N. , O'Donnell, R., MacSporran, R., Oxburgh, S. and Courtial, J. (2020) Relativistic photography with a wide aperture. Journal of the Optical Society of America A: Optics Image Science and Vision, 37(1), pp. 123-134. (doi: 10.1364/JOSAA.37.000123)
Georgantzis Garcia, D., Chaplain, G. J., Belin, J. , Tyc, T., Englert, C. and Courtial, J. (2020) Optical triangulations of curved spaces. Optica, 7(2), pp. 142-147. (doi: 10.1364/OPTICA.378357)
2019
Belin, J. , Tyc, T., Grunwald, M., Oxburgh, S., Cowie, E. N. , White, C. D. and Courtial, J. (2019) Ideal-lens cloaks and new cloaking strategies. Optics Express, 27(26), pp. 37327-37336. (doi: 10.1364/OE.27.037327) (PMID:31878515)
Bělín, J. and Courtial, J. (2019) Imaging with two skew ideal lenses. Journal of the Optical Society of America A: Optics Image Science and Vision, 36(1), pp. 132-141. (doi: 10.1364/JOSAA.36.000132) (PMID:30645348)
Bělín, J. , Lembessis, V.E., Lyras, A., Aldossary, O. and Courtial, J. (2019) Arrays of dark optical traps on a toroidal surface. Physical Review A: Atomic, Molecular and Optical Physics, 99(1), 013841. (doi: 10.1103/PhysRevA.99.013841)
Sroor, H., Naidoo, D., Miller, S. W., Nelson, J., Courtial, J. and Forbes, A. (2019) Fractal light from lasers. Physical Review A: Atomic, Molecular and Optical Physics, 99(1), 013848. (doi: 10.1103/PhysRevA.99.013848)
2018
Courtial, J. , Chen, N., Ogilvie, S., Kirkpatrick, B. C., Hamilton, A. C., Gibson, G. M. , Tyc, T., Logean, E. and Scharf, T. (2018) Experimental demonstration of ray-rotation sheets. Journal of the Optical Society of America A: Optics Image Science and Vision, 35(7), pp. 1160-1164. (doi: 10.1364/JOSAA.35.001160) (PMID:30110308)
Courtial, J. , Tyc, T., Belin, J. , Oxburgh, S., Ferenczi, G., Cowie, E. and White, C. D. (2018) Ray-optical transformation optics with ideal thin lenses makes omnidirectional lenses. Optics Express, 26(14), pp. 17872-17888. (doi: 10.1364/OE.26.017872)
Sroor, H., Naidoo, D., Courtial, J. and Forbes, A. (2018) A Novel Laser Resonator for Fractal Modes. In: Laser Resonators, Microresonators, and Beam Control XX, San Francisco, CA, USA, 29 Jan - 1 Feb 2018, 105181N. (doi: 10.1117/12.2290958)
2017
Belin, J. , Oxburgh, S., Tyc, T. and Courtial, J. (2017) Imaging with Pairs of Skew Lenses. In: SPIE Optics and Photonics Conference, San Diego, CA, USA, 06-10 Aug 2017, p. 1037607. ISBN 9781510612099 (doi: 10.1117/12.2272989)
Belin, J. , Tyc, T., Oxburgh, S. and Courtial, J. (2017) Ideal-Lens Stars. In: SPIE Optics and Photonics Conference, San Diego, CA, USA, 06-10 Aug 2017, p. 1037605. ISBN 9781510612099 (doi: 10.1117/12.2272991)
Oxburgh, S., Cowie, E. , Belin, J. and Courtial, J. (2017) Experimental Realisability of Lens Cloaks. In: SPIE Optics and Photonics Conference, San Diego, CA, USA, 06-10 Aug 2017, 103760D. ISBN 9781510612099 (doi: 10.1117/12.2272990)
Bělín, J. , Oxburgh, S., Tyc, T. and Courtial, J. K. (2017) Description of Pairs of Skew Lenses as a Single Lens. In: OSA Frontiers in Optics/Laser Science APS/DLS, Washington, D.C., USA, 16-20 Sep 2017, JTu2A.44. ISBN 9781943580330 (doi: 10.1364/FIO.2017.JTu2A.44)
Bourgenot, C., Courtial, J. , Cowie, E. , Girkin, J., Love, G., Robertson, D. and Young, L. (2017) Design, Manufacture, and Evaluation of Prototype Telescope Windows for Use as Low Vision Aids. In: SPIE Optics and Photonics Conference, San Diego, CA, USA, 06-10 Aug 2017, 103760I. ISBN 9781510612099 (doi: 10.1117/12.2272992)
2016
Cowie, E. N. , Bourgenot, C., Robertson, D. and Courtial, J. (2016) Resolution limits of pixellated optical components. Proceedings of the SPIE: The International Society for Optical Engineering, 9948, 99480N. (doi: 10.1117/12.2237826)
Courtial, J. , Gray, N. , O'Donnell, R., MacSporran, R., Oxburgh, S., Hendry, M. and Cowie, E. N. (2016) Photography at relativistic speeds. Proceedings of the SPIE: The International Society for Optical Engineering, 9948, 994808. (doi: 10.1117/12.2237850)
Courtial, J. , Oxburgh, S., Cowie, E. N. , Chaplain, G., Belin, J., Macauley, G., White, C. D. and Tyc, T. (2016) Progress towards omnidirectional transformation optics with lenses. Proceedings of the SPIE: The International Society for Optical Engineering, 9918, 99182V. (doi: 10.1117/12.2237843)
Tyc, T., Oxburgh, S., Cowie, E. N. , Chaplain, G. J., Macauley, G., White, C. D. and Courtial, J. (2016) Omnidirectional transformation-optics cloak made from lenses and glenses. Journal of the Optical Society of America A: Optics Image Science and Vision, 33(6), pp. 1032-1040. (doi: 10.1364/JOSAA.33.001032) (PMID:27409429)
Chaplain, G. J., Macauley, G., Bělín, J., Tyc, T., Cowie, E. N. and Courtial, J. (2016) Ray optics of generalised lenses. Journal of the Optical Society of America A: Optics Image Science and Vision, 33(5), pp. 962-969. (doi: 10.1364/JOSAA.33.000962)
Oxburgh, S., White, C. D., Antoniou, G., Orife, E., Sharpe, T. and Courtial, J. (2016) Large-scale, white-light, transformation optics using integral imaging. Journal of Optics, 18, 044009. (doi: 10.1088/2040-8978/18/4/044009)
2015
Lembessis, V. E., Courtial, J. , Radwell, N., Selyem, A., Franke-Arnold, S. , Aldossary, O.M. and Babiker, M. (2015) Graphene-like optical light field and its interaction with two-level atoms. Physical Review A: Atomic, Molecular and Optical Physics, 92, 063833. (doi: 10.1103/PhysRevA.92.063833)
Courtial, J. , Oxburgh, S. and Tyc, T. (2015) Direct, stigmatic, imaging with curved surfaces. Journal of the Optical Society of America A: Optics Image Science and Vision, 32(3), pp. 478-481. (doi: 10.1364/JOSAA.32.000478)
2014
Oxburgh, S., Gray, N. , Hendry, M. and Courtial, J. (2014) Lorentz-transformation and Galileo-transformation Windows. In: Novel Optical Systems Design and Optimization XVII, San Diego, CA, USA, 17-21 Aug 2014, 91931K. (doi: 10.1117/12.2061415)
Oxburgh, S., White, C. D., Antoniou, G., Mertens, L., Mullen, C., Ramsay, J., Mccall, D. and Courtial, J. (2014) Windows into Non-Euclidean Spaces. In: Novel Optical Systems Design and Optimization XVII, San Diego, CA, USA, 17-21 Aug 2014, p. 919307. (doi: 10.1117/12.2061418)
Oxburgh, S., White, C. D., Antoniou, G., Orife, E. and Courtial, J. (2014) Transformation Optics with Windows. In: Novel Optical Systems Design and Optimization XVII, San Diego, CA, USA, 17-21 Aug 2014, 91931E. (doi: 10.1117/12.2061404)
Stockman, P., Oxburgh, S., Tyc, T. and Courtial, J. (2014) What Do Forbidden Light-ray Fields Look Like? In: Novel Optical Systems Design and Optimization XVII, San Diego, CA, USA, 17-21 Aug 2014, p. 919304. (doi: 10.1117/12.2061409)
Oxburgh, S., Tyc, T. and Courtial, J. (2014) Dr TIM: ray-tracer TIM, with additional specialist scientific capabilities. Computer Physics Communications, 185(3), pp. 1027-1037. (doi: 10.1016/j.cpc.2013.10.031)
Oxburgh, S., White, C. D., Antoniou, G. and Courtial, J. (2014) Law of refraction for generalised confocal lenslet arrays. Optics Communications, 313, pp. 119-122. (doi: 10.1016/j.optcom.2013.10.017)
Miller, S. W., Nelson, J. and Courtial, J. (2014) Three-dimensional Self-similar Fractal Light in Canonical Resonators. In: Laser Beam Shaping XV, San Diego, CA, USA, 17-19 Aug 2014, 91940Z. (doi: 10.1117/12.2061410)
Strathearn, A., Moncreiff, J., Oxburgh, S. and Courtial, J. (2014) Complex Imaging with Ray-rotating Windows. In: Current Developments in Lens Design and Optical Engineering XV, San Diego, CA, USA, 18-20 Aug 2014, 91920A. (doi: 10.1117/12.2061398)
2013
Lavery, M. P. J., Robertson, D. J., Sponselli, A., Courtial, J. , Steinhoff, N. K., Tyler, G. A., Wilner, A. E. and Padgett, M. J. (2013) Efficient measurement of an optical orbital-angular-momentum spectrum comprising more than 50 states. New Journal of Physics, 15(1), 013024. (doi: 10.1088/1367-2630/15/1/013024)
Oxburgh, S. and Courtial, J. (2013) Perfect imaging with planar interfaces. Journal of the Optical Society of America A: Optics Image Science and Vision, 30(11), p. 2334. (doi: 10.1364/JOSAA.30.002334) (PMID:24322933)
2012
Courtial, J. (2012) A simple experiment that demonstrates the “green flash”. American Journal of Physics, 80(11), p. 955. (doi: 10.1119/1.4746384)
Leavey, S. , Rae, K., Murray, A. and Courtial, J. (2012) Autostereogram resonators. Optics Communications, 285(19), pp. 3971-3975. (doi: 10.1016/j.optcom.2012.05.054)
Courtial, J. , Kirkpatrick, B. C. and Alonso, M. A. (2012) Imaging with complex ray-optical refractive-index interfaces between complex object and image distances. Optics Letters, 37(4), p. 701. (doi: 10.1364/OL.37.000701)
Courtial, J. and Tyc, T. (2012) Generalized laws of refraction that can lead to wave-optically forbidden light-ray fields. Journal of the Optical Society of America A: Optics Image Science and Vision, 29(7), p. 1407. (doi: 10.1364/JOSAA.29.001407)
Lambert, D., Hamilton, A. C., Constable, G., Snehanshu, H., Talati, S. and Courtial, J. (2012) TIM, a ray-tracing program for METATOY research and its dissemination. Computer Physics Communications, 183(3), pp. 711-732. (doi: 10.1016/j.cpc.2011.11.011)
Lavery, M.P.J., Robertson, D.J., Berkhout, G.C.G., Love, G.D., Padgett, M.J. and Courtial, J. (2012) Refractive elements for the measurement of the orbital angular momentum of a single photon. Optics Express, 20(3), pp. 2110-2115. (doi: 10.1364/OE.20.002110)
Welsh, S. S. and Courtial, J. (2012) View rotation with parallel ray-rotating windows. Optics Communications, 285(24), pp. 4802-4806. (doi: 10.1016/j.optcom.2012.07.060)
2011
Courtial, J. and Tyc, T. (2011) METATOYs and optical vortices. Journal of Optics, 13(11), p. 115704. (doi: 10.1088/2040-8978/13/11/115704)
Lavery, M. P.J., Dudley, A., Forbes, A., Courtial, J. and Padgett, M. J. (2011) Robust interferometer for the routing of light beams carrying orbital angular momentum. New Journal of Physics, 13(9), 093014. (doi: 10.1088/1367-2630/13/9/093014)
Lavery, M. P.G. , Berkhout, G. C.G., Courtial, J. and Padgett, M. J. (2011) Measurement of the light orbital angular momentum spectrum using an optical geometric transformation. Journal of Optics, 13(6), 064006. (doi: 10.1088/2040-8978/13/6/064006)
Maceina, T., Juzeliūnas, G. and Courtial, J. (2011) Quantifying metarefraction with confocal lenslet arrays. Optics Communications, 284(20), pp. 5008-5019. (doi: 10.1016/j.optcom.2011.06.058)
2010
Courtial, J. , Kirkpatrick, B. C., Logean, E. and Scharf, T. (2010) Experimental demonstration of ray-optical refraction with confocal lenslet arrays. Optics Letters, 35(23), pp. 4060-4062. (doi: 10.1364/OL.35.004060)
Berkhout, G. C.G., Lavery, M. P.J. , Courtial, J. , Beijersbergen, M. W. and Padgett, M. J. (2010) Efficient sorting of orbital angular momentum states of light. Physical Review Letters, 105(15), 153601. (doi: 10.1103/PhysRevLett.105.153601)
Hamilton, A.C., Sundar, B. and Courtial, J. (2010) Local light-ray rotation around arbitrary axes. Journal of Optics, 12(9), 095101. (doi: 10.1088/2040-8978/12/9/095101)
2009
Blair, M., Clark, L., Houston, E., Smith, G., Leach, J., Hamilton, A. and Courtial, J. (2009) Experimental demonstration of a light-ray-direction-flipping METATOY based on confocal lenticular arrays. Optics Communications, 282(21), pp. 4299-4302. (doi: 10.1016/j.optcom.2009.07.035)
Courtial, J. (2009) Geometric limits to geometric optical imaging with infinite, planar, non-absorbing sheets. Optics Communications, 282(13), pp. 2480-2483. (doi: 10.1016/j.optcom.2009.03.036)
Courtial, J. (2009) Standard and non-standard metarefraction with confocal lenslet arrays. Optics Communications, 282(13), pp. 2634-2641. (doi: 10.1016/j.optcom.2009.03.046)
Hamilton, A.C. and Courtial, J. (2009) Generalized refraction using lenslet arrays. Journal of Optics A: Pure and Applied Optics, 11(6), (doi: 10.1088/1464-4258/11/6/065502)
Hamilton, A.C. and Courtial, J. (2009) Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit. New Journal of Physics, 11(1), 013042. (doi: 10.1088/1367-2630/11/1/013042)
Hamilton, A.C., Sundar, B., Nelson, J. and Courtial, J. (2009) Local light-ray rotation. Journal of Optics A: Pure and Applied Optics, 11(8), (doi: 10.1088/1464-4258/11/8/085705)
Sundar, B., Hamilton, A.C. and Courtial, J. (2009) Fermat's principle and the formal equivalence of local light-ray rotation and refraction at the interface between homogeneous media with a complex refractive index ratio. Optics Letters, 34(3), pp. 374-376. (doi: 10.1364/OL.34.000374)
2008
Dennis, M.R., Hamilton, A. and Courtial, J. (2008) Superoscillation in speckle patterns. Optics Letters, 33(24), pp. 2976-2978. (doi: 10.1364/OL.33.002976)
Courtial, J. (2008) Ray-optical refraction with confocal lenslet arrays. New Journal of Physics, 10(8), 083033. (doi: 10.1088/1367-2630/10/8/083033)
Courtial, J. and Nelson, J. (2008) Ray-optical negative refraction and pseudoscopic imaging with Dove-prism arrays. New Journal of Physics, 10, 023028. (doi: 10.1088/1367-2630/10/2/023028)
Gibson, G., Carberry, D.M., Whyte, G., Leach, J., Courtial, J., Jackson, J.C., Robert, D., Miles, M. and Padgett, M. (2008) Holographic assembly workstation for optical manipulation. Journal of Optics A: Pure and Applied Optics, 10(4), (doi: 10.1088/1464-4258/10/4/044009)
Hamilton, A.C. and Courtial, J. (2008) Optical properties of a Dove-prism sheet. Journal of Optics A: Pure and Applied Optics, 10(12), (doi: 10.1088/1464-4258/10/12/125302)
Hamilton, A. and Courtial, J. (2008) Imaging with parallel ray-rotation sheets. Optics Express, 16(25), pp. 20826-20833.
Nelson, J., Courtial, J. and Whyte, G. (2008) Photorealistic visualization of imaging in canonical optical resonators. American Journal of Physics, 76(11), pp. 991-995. (doi: 10.1119/1.2970053)
Thomson, L.C., Boissel, Y., Whyte, G., Yao, E. and Courtial, J. (2008) Simulation of superresolution holography for optical tweezers. New Journal of Physics, 10(2), 023015. (doi: 10.1088/1367-2630/10/2/023015)
Thomson, L.C., Whyte, G., Mazilu, M. and Courtial, J. (2008) Simulated holographic three-dimensional intensity shaping of evanescent-wave fields. Journal of the Optical Society of America B: Optical Physics, 25(5), pp. 849-853. (doi: 10.1364/JOSAB.25.000849)
Thomson, L. and Courtial, J. (2008) Holographic shaping of generalized self-reconstructing light beams. Optics Communications, 281(5), pp. 1217-1221. (doi: 10.1016/j.optcom.2007.10.110)
2007
Courtial, J. and OHolleran, K. (2007) Experiments with twisted light. European Physical Journal: Special Topics, 145, pp. 35-47. (doi: 10.1140/epjst/e2007-00146-3)
2006
Yao, E., Franke-Arnold, S. , Courtial, J., Padgett, M. J. and Barnett, S. M. (2006) Observation of quantum entanglement using spatial light modulators. Optics Express, 14(26), pp. 13089-13094. (doi: 10.1364/OE.14.013089)
Courtial, J. , Whyte, G., Bouchal, Z. and Wagner, J. (2006) Iterative algorithms for holographic shaping of non-diffracting and self-imaging light beams. Optics Express, 14, pp. 2108-2116.
Courtial, J. , Zambrini, R., Dennis, M. and Vasnetsov, M. (2006) Angular momentum of optical vortex arrays. Optics Express, 14, pp. 938-949.
Leach, J. et al. (2006) Interactive approach to optical tweezers control. Applied Optics, 45(5), pp. 897-903. (doi: 10.1364/AO.45.000897)
Whyte, G., Ohberg, P. and Courtial, J. (2006) Fourier transforming a trapped Bose-Einstein condensate by waiting a quarter of the trap period: simulation and applications. New Journal of Physics, 8(9), p. 196. (doi: 10.1088/1367-2630/8/9/196)
Yao, E., Franke-Arnold, S., Courtial, J., Barnett, S. and Padgett, M.J. (2006) Fourier relationship between angular position and optical orbital angular momentum. Optics Express, 14, pp. 9071-9076. (doi: 10.1364/OE.14.009071)
2005
Schonbrun, E., Piestun, R., Jordan, P., Cooper, J., Wulff, K. D., Courtial, J. and Padgett, M. (2005) 3D interferometric optical tweezers using a single spatial light modulator. Optics Express, 13(10), pp. 3777-3786. (doi: 10.1364/OPEX.13.003777)
Leach, J., Dennis, M.R., Courtial, J. and Padgett, M.J. (2005) Vortex knots in light. New Journal of Physics, 7(1), p. 55. (doi: 10.1088/1367-2630/7/1/055)
Whyte, G. and Courtial, J. (2005) Experimental demonstration of holographic three-dimensional light shaping using a Gerchberg-Saxton algorithm. New Journal of Physics, 7(1), p. 117. (doi: 10.1088/1367-2630/7/1/117)
2004
Leach, J., Dennis, M. R., Courtial, J. and Padgett, M. J. (2004) Laser beams: knotted threads of darkness. Nature, 432(7014), p. 165. (doi: 10.1038/432165a)
Gibson, G., Courtial, J. , Padgett, M. J. , Vasnetsov, M., Pas'ko, V., Barnett, S. M. and Franke-Arnold, S. (2004) Free-space information transfer using light beams carrying orbital angular momentum. Optics Express, 12(22), pp. 5448-5456. (doi: 10.1364/OPEX.12.005448)
Sinclair, G., Jordan, P., Courtial, J. , Padgett, M. , Cooper, J. and Laczik, Z. J. (2004) Assembly of 3-dimensional structures using programmable holographic optical tweezers. Optics Express, 12(22), pp. 5475-5480. (doi: 10.1364/OPEX.12.005475)
Franke-Arnold, S., Barnett, S. M. , Yao, E., Leach, J., Courtial, J. and Padgett, M. (2004) Uncertainty principle for angular position and angular momentum. New Journal of Physics, 6(103), (doi: 10.1088/1367-2630/6/1/103)
Whyte, G., Veitch, J., Ohberg, P. and Courtial, J. (2004) Vortex sorter for Bose-Einstein condensates. Physical Review A: Atomic, Molecular and Optical Physics, 70(1), art 011603. (doi: 10.1103/PhysRevA.70.011603)
Hirst, B., Gibson, G. , Gillespie, S., Archibald, I., Podlaha, O., Skeldon, K. D., Courtial, J. , Monk, S. and Padgett, M. (2004) Oil and gas prospecting by ultra-sensitive optical gas detection with inverse gas dispersion modelling. Geophysical Research Letters, 31(12), art L12115. (doi: 10.1029/2004GL019678)
Whyte, G., Ohberg, P. and Courtial, J. (2004) Transverse laser modes in Bose-Einstein condensates. Physical Review A: Atomic, Molecular and Optical Physics, 69(5), art 053610. (doi: 10.1103/PhysRevA.69.053610)
Padgett, M. , Courtial, J. and Allen, L. (2004) Light's orbital angular momentum. Physics Today, 57(5), pp. 35-40. (doi: 10.1063/1.1768672)
Sinclair, G., Leach, J., Jordan, P., Gibson, G. , Yao, E., Laczik, Z. J., Padgett, M. and Courtial, J. (2004) Interactive application in holographic optical tweezers of a multi-plane Gerchberg-Saxton algorithm for three-dimensional light shaping. Optics Express, 12(8), pp. 1665-1670. (doi: 10.1364/OPEX.12.001665)
Leach, J., Sinclair, G., Jordan, P., Courtial, J. , Padgett, M. J. , Cooper, J. and Laczik, Z. J. (2004) 3D manipulation of particles into crystal structures using holographic optical tweezers. Optics Express, 12(1), pp. 220-226. (doi: 10.1364/OPEX.12.000220)
Leach, J., Courtial, J. , Skeldon, K., Barnett, S. M. , Franke-Arnold, S. and Padgett, M. J. (2004) Interferometric methods to measure orbital and spin, or the total angular momentum of a single photon. Physical Review Letters, 92(1), 013601. (doi: 10.1103/PhysRevLett.92.013601)
Bouchal, Z. and Courtial, J. (2004) The connection of singular and nondiffracting optics. Journal of Optics A: Pure and Applied Optics, 6(5), S184-S188. (doi: 10.1088/1464-4258/6/5/008)
Gibson, G. , Courtial, J. , Vasnetsov, M., Barnett, S. , Franke-Arnold, S. and Padgett, M. (2004) Increasing the Data Density of Free-space Optical Communications Using Orbital Angular Momentum. In: Free-Space Laser Communications IV, Denver, CO, USA, 02-06 Aug 2004, pp. 367-373. (doi: 10.1117/12.557176)
2003
Courtial, J. , Padgett, M. , Leach, J., Yao, E., Barnett, S. and Franke-Arnold, S. (2003) Measuring the topological charge of optical vortices: from the orbital angular momentum of individual photons to the angular uncertainty principle. In: 1st International Conference on Advanced Optoelectronics and Lasers/1st Workshop on Precision Oscillations in Electronics and Optics, Alushta, Ukraine, 16-20 Sep 2003, ISBN 0780379489 (doi: 10.1109/CAOL.2003.1250503)
Leach, J., Franke-Arnold, S. , Courtial, J. , Yao, E., Barnett, S. and Padgett, M. (2003) Measurement of the Angle-angular Momentum Uncertainty of a Light Beam. In: 5th International Workshop on Laser and Fiber-Optical Networks Modeling, Alushta, Ukraine, 19-20 Sep 2003, p. 145. ISBN 9780780377097 (doi: 10.1109/LFNM.2003.1246106)
Watterson, C. M.G., Padgett, M. J. and Courtial, J. (2003) Classic-fractal eigenmodes of unstable canonical resonators. Optics Communications, 223(1-3), 17 -23. (doi: 10.1016/S0030-4018(03)01620-1)
Forrester, A., Courtial, J. and Padgett, M.J. (2003) Performance of a rotating aperture for spinning and orienting objects in optical tweezers. Journal of Modern Optics, 50(10), 1533 -1538. (doi: 10.1080/0950034021000020798)
Wei, H.Q., Xue, X., Leach, J., Padgett, M.J., Barnett, S.M., Franke-Arnold, S., Yao, E. and Courtial, J. (2003) Simplified measurement of the orbital angular momentum of single photons. Optics Communications, 223(1-3), 117 -122. (doi: 10.1016/S0030-4018(03)01619-5)
Leach, J., Padgett, M.J. and Courtial, J. (2003) Fractals in pixellated video feedback. Contemporary Physics, 44(2), 137 -143. (doi: 10.1080/0010751021000029598)
Bingelyte, V., Leach, J., Courtial, J. and Padgett, M.J. (2003) Optically controlled three-dimensional rotation of microscopic objects. Applied Physics Letters, 82(5), 829 -831. (doi: 10.1063/1.1544067)
2002
Forrester, A., Lonnqvist, M., Padgett, M. J. and Courtial, J. (2002) Why are the eigenmodes of stable laser resonators structurally stable? Optics Letters, 27(21), 1869 -1871. (doi: 10.1364/OL.27.001869)
Leach, J., Padgett, M. J. , Barnett, S. M. , Franke-Arnold, S. and Courtial, J. (2002) Measuring the orbital angular momentum of a single photon. Physical Review Letters, 88(25), p. 257901. (doi: 10.1103/PhysRevLett.88.257901)
Chavez-Cerda, S., Padgett, M.J. , Allison, I., New, G.H.C., Gutierrez-Vega, J.C., O'Neil, A.T., MacVicar, I. and Courtial, J. (2002) Holographic generation and orbital angular momentum of high-order mathieu beams. Journal of Optics B: Quantum and Semiclassical Optics, 4(2), S52 -S57. (doi: 10.1088/1464-4266/4/2/368)
Padgett, M., Courtial, J., Allen, L., Franke-Arnold, S. and Barnett, S.M. (2002) Entanglement of orbital angular momentum for the signal and idler beams in parametric down-conversion. Journal of Modern Optics, 49(5-6), 777 -785. (doi: 10.1080/09500340110108594)
Courtial, J. (2002) Fractal laser mode structure due to iterated diffractive multiple imaging. Journal of Modern Optics, 49, pp. 839-849. (doi: 10.1080/09500340110109719)
2001
Courtial, J. , Leach, J. and Padgett, M.J. (2001) Image Processing: Fractals in pixellated video feedback. Nature, 414(6866), p. 864. (doi: 10.1038/414864a)
Forrester, A., Courtial, J. and Padgett, M. (2001) Fractal generation using optical feedback with incoherent gain. Optics Communications, 190(1-6), 123 -127. (doi: 10.1016/S0030-4018(01)01090-2)
2000
Courtial, J. and Padgett, M. J. (2000) Monitor-outside-a-monitor effect and self-similar fractal structure in the eigenmodes of unstable optical resonators. Physical Review Letters, 85(25), 5320 -5323. (doi: 10.1103/PhysRevLett.85.5320)
Courtial, J. and Padgett, M. J. (2000) Limit to the orbital angular momentum per unit energy in a light beam that can be focused onto a small particle. Optics Communications, 173(1-6), 269 -274. (doi: 10.1016/S0030-4018(99)00619-7)
Courtial, J. and Padgett, M. J. (2000) Generation of self-reproducing fractal patterns using a multiple imaging system with feedback. Journal of Modern Optics, 47(8), 1469 -1474. (doi: 10.1080/095003400403048)
1999
Allen, L., Courtial, J. and Padgett, M.J. (1999) Matrix formulation for the propagation of light beams with orbital and spin angular momenta. Physical Review E, 60(6), 7497 -7503. (doi: 10.1103/PhysRevE.60.7497)
Padgett, M.J. and Courtial, J. (1999) Poincare-sphere equivalent for light beams containing orbital angular momentum. Optics Letters, 24(7), pp. 430-432. (doi: 10.1364/OL.24.000430)
Courtial, J. and Padgett, M.J. (1999) Performance of a cylindrical lens mode converter for producing Laguerre-Gaussian laser modes. Optics Communications, 159(39141), pp. 13-18. (doi: 10.1016/S0030-4018(98)00599-9)
1998
Courtial, J. , Robertson, D.A., Dholakia, K., Allen, L. and Padgett, M.J. (1998) Rotational frequency shift of a light beam. Physical Review Letters, 81(22), pp. 4828-4830. (doi: 10.1103/PhysRevLett.81.4828)
Courtial, J. , Dholakia, K., Robertson, D.A., Allen, L. and Padgett, M.J. (1998) Measurement of the rotational frequency shift imparted to a rotating light beam possessing orbital angular momentum. Physical Review Letters, 80(15), pp. 3217-3219. (doi: 10.1103/PhysRevLett.80.3217)
1997
Courtial, J. , Dholakia, K., Allen, L. and Padgett, M.J. (1997) Gaussian beams with very high orbital angular momentum. Optics Communications, 144(39236), pp. 210-213. (doi: 10.1016/S0030-4018(97)00376-3)
Courtial, J. , Dholakia, K., Allen, L. and Padgett, M.J. (1997) Second-harmonic generation and the conservation of orbital angular momentum with high-order Laguerre-Gaussian modes. Physical Review A: Atomic, Molecular and Optical Physics, 56(5), pp. 4193-4196. (doi: 10.1103/PhysRevA.56.4193)
Courtial, J. , Patterson, B.A., Hirst, W., Harvey, A.R. , Duncan, A.J., Sibbett, W. and Padgett, M.J. (1997) Static Fourier-transform ultraviolet spectrometer for gas detection. Applied Optics, 36(13), pp. 2813-2817. (doi: 10.1364/AO.36.002813)
1996
Patterson, B.A., Antoni, M., Courtial, J. , Duncan, A. J., Sibbett, W. and Padgett, M.J. (1996) An ultra-compact static Fourier-transform spectrometer based on a single birefringent component. Optics Communications, 130(39141), pp. 1-6. (doi: 10.1016/0030-4018(96)00179-4)
Articles
Courtial, J. , Bělin, J. , Soboňa, M., Locher, M. and Tyc, T. (2023) Shifty invisibility cloaks. Optics Express, 32(1), pp. 11-25. (doi: 10.1364/OE.500512) (PMID:38175042)
Bělín, J. , Ferenczi, G. and Courtial, J. (2022) Skew-lens image rotator. Optics Express, 30(15), pp. 25958-25973. (doi: 10.1364/OE.458158) (PMID:36236795)
Bělín, J. , Courtial, J. and Tyc, T. (2021) Lens stars and Platonic lenses. Optics Express, 29(25), pp. 42055-42074. (doi: 10.1364/OE.442825)
Chen, H., Tao, S., Bělín, J. , Courtial, J. and Miao, R.-X. (2020) Transformation cosmology. Physical Review A: Atomic, Molecular and Optical Physics, 102(2), 023528. (doi: 10.1103/PhysRevA.102.023528)
Tyc, T., Belin, J. , Oxburgh, S., White, C. D., Cowie, E. N. and Courtial, J. (2020) Combinations of generalized lenses that satisfy the edge-imaging condition of transformation optics. Journal of the Optical Society of America A: Optics Image Science and Vision, 37(2), pp. 305-315. (doi: 10.1364/JOSAA.37.000305) (PMID:32118911)
Gray, N. , O'Donnell, R., MacSporran, R., Oxburgh, S. and Courtial, J. (2020) Relativistic photography with a wide aperture. Journal of the Optical Society of America A: Optics Image Science and Vision, 37(1), pp. 123-134. (doi: 10.1364/JOSAA.37.000123)
Georgantzis Garcia, D., Chaplain, G. J., Belin, J. , Tyc, T., Englert, C. and Courtial, J. (2020) Optical triangulations of curved spaces. Optica, 7(2), pp. 142-147. (doi: 10.1364/OPTICA.378357)
Belin, J. , Tyc, T., Grunwald, M., Oxburgh, S., Cowie, E. N. , White, C. D. and Courtial, J. (2019) Ideal-lens cloaks and new cloaking strategies. Optics Express, 27(26), pp. 37327-37336. (doi: 10.1364/OE.27.037327) (PMID:31878515)
Bělín, J. and Courtial, J. (2019) Imaging with two skew ideal lenses. Journal of the Optical Society of America A: Optics Image Science and Vision, 36(1), pp. 132-141. (doi: 10.1364/JOSAA.36.000132) (PMID:30645348)
Bělín, J. , Lembessis, V.E., Lyras, A., Aldossary, O. and Courtial, J. (2019) Arrays of dark optical traps on a toroidal surface. Physical Review A: Atomic, Molecular and Optical Physics, 99(1), 013841. (doi: 10.1103/PhysRevA.99.013841)
Sroor, H., Naidoo, D., Miller, S. W., Nelson, J., Courtial, J. and Forbes, A. (2019) Fractal light from lasers. Physical Review A: Atomic, Molecular and Optical Physics, 99(1), 013848. (doi: 10.1103/PhysRevA.99.013848)
Courtial, J. , Chen, N., Ogilvie, S., Kirkpatrick, B. C., Hamilton, A. C., Gibson, G. M. , Tyc, T., Logean, E. and Scharf, T. (2018) Experimental demonstration of ray-rotation sheets. Journal of the Optical Society of America A: Optics Image Science and Vision, 35(7), pp. 1160-1164. (doi: 10.1364/JOSAA.35.001160) (PMID:30110308)
Courtial, J. , Tyc, T., Belin, J. , Oxburgh, S., Ferenczi, G., Cowie, E. and White, C. D. (2018) Ray-optical transformation optics with ideal thin lenses makes omnidirectional lenses. Optics Express, 26(14), pp. 17872-17888. (doi: 10.1364/OE.26.017872)
Cowie, E. N. , Bourgenot, C., Robertson, D. and Courtial, J. (2016) Resolution limits of pixellated optical components. Proceedings of the SPIE: The International Society for Optical Engineering, 9948, 99480N. (doi: 10.1117/12.2237826)
Courtial, J. , Gray, N. , O'Donnell, R., MacSporran, R., Oxburgh, S., Hendry, M. and Cowie, E. N. (2016) Photography at relativistic speeds. Proceedings of the SPIE: The International Society for Optical Engineering, 9948, 994808. (doi: 10.1117/12.2237850)
Courtial, J. , Oxburgh, S., Cowie, E. N. , Chaplain, G., Belin, J., Macauley, G., White, C. D. and Tyc, T. (2016) Progress towards omnidirectional transformation optics with lenses. Proceedings of the SPIE: The International Society for Optical Engineering, 9918, 99182V. (doi: 10.1117/12.2237843)
Tyc, T., Oxburgh, S., Cowie, E. N. , Chaplain, G. J., Macauley, G., White, C. D. and Courtial, J. (2016) Omnidirectional transformation-optics cloak made from lenses and glenses. Journal of the Optical Society of America A: Optics Image Science and Vision, 33(6), pp. 1032-1040. (doi: 10.1364/JOSAA.33.001032) (PMID:27409429)
Chaplain, G. J., Macauley, G., Bělín, J., Tyc, T., Cowie, E. N. and Courtial, J. (2016) Ray optics of generalised lenses. Journal of the Optical Society of America A: Optics Image Science and Vision, 33(5), pp. 962-969. (doi: 10.1364/JOSAA.33.000962)
Oxburgh, S., White, C. D., Antoniou, G., Orife, E., Sharpe, T. and Courtial, J. (2016) Large-scale, white-light, transformation optics using integral imaging. Journal of Optics, 18, 044009. (doi: 10.1088/2040-8978/18/4/044009)
Lembessis, V. E., Courtial, J. , Radwell, N., Selyem, A., Franke-Arnold, S. , Aldossary, O.M. and Babiker, M. (2015) Graphene-like optical light field and its interaction with two-level atoms. Physical Review A: Atomic, Molecular and Optical Physics, 92, 063833. (doi: 10.1103/PhysRevA.92.063833)
Courtial, J. , Oxburgh, S. and Tyc, T. (2015) Direct, stigmatic, imaging with curved surfaces. Journal of the Optical Society of America A: Optics Image Science and Vision, 32(3), pp. 478-481. (doi: 10.1364/JOSAA.32.000478)
Oxburgh, S., Tyc, T. and Courtial, J. (2014) Dr TIM: ray-tracer TIM, with additional specialist scientific capabilities. Computer Physics Communications, 185(3), pp. 1027-1037. (doi: 10.1016/j.cpc.2013.10.031)
Oxburgh, S., White, C. D., Antoniou, G. and Courtial, J. (2014) Law of refraction for generalised confocal lenslet arrays. Optics Communications, 313, pp. 119-122. (doi: 10.1016/j.optcom.2013.10.017)
Lavery, M. P. J., Robertson, D. J., Sponselli, A., Courtial, J. , Steinhoff, N. K., Tyler, G. A., Wilner, A. E. and Padgett, M. J. (2013) Efficient measurement of an optical orbital-angular-momentum spectrum comprising more than 50 states. New Journal of Physics, 15(1), 013024. (doi: 10.1088/1367-2630/15/1/013024)
Oxburgh, S. and Courtial, J. (2013) Perfect imaging with planar interfaces. Journal of the Optical Society of America A: Optics Image Science and Vision, 30(11), p. 2334. (doi: 10.1364/JOSAA.30.002334) (PMID:24322933)
Courtial, J. (2012) A simple experiment that demonstrates the “green flash”. American Journal of Physics, 80(11), p. 955. (doi: 10.1119/1.4746384)
Leavey, S. , Rae, K., Murray, A. and Courtial, J. (2012) Autostereogram resonators. Optics Communications, 285(19), pp. 3971-3975. (doi: 10.1016/j.optcom.2012.05.054)
Courtial, J. , Kirkpatrick, B. C. and Alonso, M. A. (2012) Imaging with complex ray-optical refractive-index interfaces between complex object and image distances. Optics Letters, 37(4), p. 701. (doi: 10.1364/OL.37.000701)
Courtial, J. and Tyc, T. (2012) Generalized laws of refraction that can lead to wave-optically forbidden light-ray fields. Journal of the Optical Society of America A: Optics Image Science and Vision, 29(7), p. 1407. (doi: 10.1364/JOSAA.29.001407)
Lambert, D., Hamilton, A. C., Constable, G., Snehanshu, H., Talati, S. and Courtial, J. (2012) TIM, a ray-tracing program for METATOY research and its dissemination. Computer Physics Communications, 183(3), pp. 711-732. (doi: 10.1016/j.cpc.2011.11.011)
Lavery, M.P.J., Robertson, D.J., Berkhout, G.C.G., Love, G.D., Padgett, M.J. and Courtial, J. (2012) Refractive elements for the measurement of the orbital angular momentum of a single photon. Optics Express, 20(3), pp. 2110-2115. (doi: 10.1364/OE.20.002110)
Welsh, S. S. and Courtial, J. (2012) View rotation with parallel ray-rotating windows. Optics Communications, 285(24), pp. 4802-4806. (doi: 10.1016/j.optcom.2012.07.060)
Courtial, J. and Tyc, T. (2011) METATOYs and optical vortices. Journal of Optics, 13(11), p. 115704. (doi: 10.1088/2040-8978/13/11/115704)
Lavery, M. P.J., Dudley, A., Forbes, A., Courtial, J. and Padgett, M. J. (2011) Robust interferometer for the routing of light beams carrying orbital angular momentum. New Journal of Physics, 13(9), 093014. (doi: 10.1088/1367-2630/13/9/093014)
Lavery, M. P.G. , Berkhout, G. C.G., Courtial, J. and Padgett, M. J. (2011) Measurement of the light orbital angular momentum spectrum using an optical geometric transformation. Journal of Optics, 13(6), 064006. (doi: 10.1088/2040-8978/13/6/064006)
Maceina, T., Juzeliūnas, G. and Courtial, J. (2011) Quantifying metarefraction with confocal lenslet arrays. Optics Communications, 284(20), pp. 5008-5019. (doi: 10.1016/j.optcom.2011.06.058)
Courtial, J. , Kirkpatrick, B. C., Logean, E. and Scharf, T. (2010) Experimental demonstration of ray-optical refraction with confocal lenslet arrays. Optics Letters, 35(23), pp. 4060-4062. (doi: 10.1364/OL.35.004060)
Berkhout, G. C.G., Lavery, M. P.J. , Courtial, J. , Beijersbergen, M. W. and Padgett, M. J. (2010) Efficient sorting of orbital angular momentum states of light. Physical Review Letters, 105(15), 153601. (doi: 10.1103/PhysRevLett.105.153601)
Hamilton, A.C., Sundar, B. and Courtial, J. (2010) Local light-ray rotation around arbitrary axes. Journal of Optics, 12(9), 095101. (doi: 10.1088/2040-8978/12/9/095101)
Blair, M., Clark, L., Houston, E., Smith, G., Leach, J., Hamilton, A. and Courtial, J. (2009) Experimental demonstration of a light-ray-direction-flipping METATOY based on confocal lenticular arrays. Optics Communications, 282(21), pp. 4299-4302. (doi: 10.1016/j.optcom.2009.07.035)
Courtial, J. (2009) Geometric limits to geometric optical imaging with infinite, planar, non-absorbing sheets. Optics Communications, 282(13), pp. 2480-2483. (doi: 10.1016/j.optcom.2009.03.036)
Courtial, J. (2009) Standard and non-standard metarefraction with confocal lenslet arrays. Optics Communications, 282(13), pp. 2634-2641. (doi: 10.1016/j.optcom.2009.03.046)
Hamilton, A.C. and Courtial, J. (2009) Generalized refraction using lenslet arrays. Journal of Optics A: Pure and Applied Optics, 11(6), (doi: 10.1088/1464-4258/11/6/065502)
Hamilton, A.C. and Courtial, J. (2009) Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit. New Journal of Physics, 11(1), 013042. (doi: 10.1088/1367-2630/11/1/013042)
Hamilton, A.C., Sundar, B., Nelson, J. and Courtial, J. (2009) Local light-ray rotation. Journal of Optics A: Pure and Applied Optics, 11(8), (doi: 10.1088/1464-4258/11/8/085705)
Sundar, B., Hamilton, A.C. and Courtial, J. (2009) Fermat's principle and the formal equivalence of local light-ray rotation and refraction at the interface between homogeneous media with a complex refractive index ratio. Optics Letters, 34(3), pp. 374-376. (doi: 10.1364/OL.34.000374)
Dennis, M.R., Hamilton, A. and Courtial, J. (2008) Superoscillation in speckle patterns. Optics Letters, 33(24), pp. 2976-2978. (doi: 10.1364/OL.33.002976)
Courtial, J. (2008) Ray-optical refraction with confocal lenslet arrays. New Journal of Physics, 10(8), 083033. (doi: 10.1088/1367-2630/10/8/083033)
Courtial, J. and Nelson, J. (2008) Ray-optical negative refraction and pseudoscopic imaging with Dove-prism arrays. New Journal of Physics, 10, 023028. (doi: 10.1088/1367-2630/10/2/023028)
Gibson, G., Carberry, D.M., Whyte, G., Leach, J., Courtial, J., Jackson, J.C., Robert, D., Miles, M. and Padgett, M. (2008) Holographic assembly workstation for optical manipulation. Journal of Optics A: Pure and Applied Optics, 10(4), (doi: 10.1088/1464-4258/10/4/044009)
Hamilton, A.C. and Courtial, J. (2008) Optical properties of a Dove-prism sheet. Journal of Optics A: Pure and Applied Optics, 10(12), (doi: 10.1088/1464-4258/10/12/125302)
Hamilton, A. and Courtial, J. (2008) Imaging with parallel ray-rotation sheets. Optics Express, 16(25), pp. 20826-20833.
Nelson, J., Courtial, J. and Whyte, G. (2008) Photorealistic visualization of imaging in canonical optical resonators. American Journal of Physics, 76(11), pp. 991-995. (doi: 10.1119/1.2970053)
Thomson, L.C., Boissel, Y., Whyte, G., Yao, E. and Courtial, J. (2008) Simulation of superresolution holography for optical tweezers. New Journal of Physics, 10(2), 023015. (doi: 10.1088/1367-2630/10/2/023015)
Thomson, L.C., Whyte, G., Mazilu, M. and Courtial, J. (2008) Simulated holographic three-dimensional intensity shaping of evanescent-wave fields. Journal of the Optical Society of America B: Optical Physics, 25(5), pp. 849-853. (doi: 10.1364/JOSAB.25.000849)
Thomson, L. and Courtial, J. (2008) Holographic shaping of generalized self-reconstructing light beams. Optics Communications, 281(5), pp. 1217-1221. (doi: 10.1016/j.optcom.2007.10.110)
Courtial, J. and OHolleran, K. (2007) Experiments with twisted light. European Physical Journal: Special Topics, 145, pp. 35-47. (doi: 10.1140/epjst/e2007-00146-3)
Yao, E., Franke-Arnold, S. , Courtial, J., Padgett, M. J. and Barnett, S. M. (2006) Observation of quantum entanglement using spatial light modulators. Optics Express, 14(26), pp. 13089-13094. (doi: 10.1364/OE.14.013089)
Courtial, J. , Whyte, G., Bouchal, Z. and Wagner, J. (2006) Iterative algorithms for holographic shaping of non-diffracting and self-imaging light beams. Optics Express, 14, pp. 2108-2116.
Courtial, J. , Zambrini, R., Dennis, M. and Vasnetsov, M. (2006) Angular momentum of optical vortex arrays. Optics Express, 14, pp. 938-949.
Leach, J. et al. (2006) Interactive approach to optical tweezers control. Applied Optics, 45(5), pp. 897-903. (doi: 10.1364/AO.45.000897)
Whyte, G., Ohberg, P. and Courtial, J. (2006) Fourier transforming a trapped Bose-Einstein condensate by waiting a quarter of the trap period: simulation and applications. New Journal of Physics, 8(9), p. 196. (doi: 10.1088/1367-2630/8/9/196)
Yao, E., Franke-Arnold, S., Courtial, J., Barnett, S. and Padgett, M.J. (2006) Fourier relationship between angular position and optical orbital angular momentum. Optics Express, 14, pp. 9071-9076. (doi: 10.1364/OE.14.009071)
Schonbrun, E., Piestun, R., Jordan, P., Cooper, J., Wulff, K. D., Courtial, J. and Padgett, M. (2005) 3D interferometric optical tweezers using a single spatial light modulator. Optics Express, 13(10), pp. 3777-3786. (doi: 10.1364/OPEX.13.003777)
Leach, J., Dennis, M.R., Courtial, J. and Padgett, M.J. (2005) Vortex knots in light. New Journal of Physics, 7(1), p. 55. (doi: 10.1088/1367-2630/7/1/055)
Whyte, G. and Courtial, J. (2005) Experimental demonstration of holographic three-dimensional light shaping using a Gerchberg-Saxton algorithm. New Journal of Physics, 7(1), p. 117. (doi: 10.1088/1367-2630/7/1/117)
Leach, J., Dennis, M. R., Courtial, J. and Padgett, M. J. (2004) Laser beams: knotted threads of darkness. Nature, 432(7014), p. 165. (doi: 10.1038/432165a)
Gibson, G., Courtial, J. , Padgett, M. J. , Vasnetsov, M., Pas'ko, V., Barnett, S. M. and Franke-Arnold, S. (2004) Free-space information transfer using light beams carrying orbital angular momentum. Optics Express, 12(22), pp. 5448-5456. (doi: 10.1364/OPEX.12.005448)
Sinclair, G., Jordan, P., Courtial, J. , Padgett, M. , Cooper, J. and Laczik, Z. J. (2004) Assembly of 3-dimensional structures using programmable holographic optical tweezers. Optics Express, 12(22), pp. 5475-5480. (doi: 10.1364/OPEX.12.005475)
Franke-Arnold, S., Barnett, S. M. , Yao, E., Leach, J., Courtial, J. and Padgett, M. (2004) Uncertainty principle for angular position and angular momentum. New Journal of Physics, 6(103), (doi: 10.1088/1367-2630/6/1/103)
Whyte, G., Veitch, J., Ohberg, P. and Courtial, J. (2004) Vortex sorter for Bose-Einstein condensates. Physical Review A: Atomic, Molecular and Optical Physics, 70(1), art 011603. (doi: 10.1103/PhysRevA.70.011603)
Hirst, B., Gibson, G. , Gillespie, S., Archibald, I., Podlaha, O., Skeldon, K. D., Courtial, J. , Monk, S. and Padgett, M. (2004) Oil and gas prospecting by ultra-sensitive optical gas detection with inverse gas dispersion modelling. Geophysical Research Letters, 31(12), art L12115. (doi: 10.1029/2004GL019678)
Whyte, G., Ohberg, P. and Courtial, J. (2004) Transverse laser modes in Bose-Einstein condensates. Physical Review A: Atomic, Molecular and Optical Physics, 69(5), art 053610. (doi: 10.1103/PhysRevA.69.053610)
Padgett, M. , Courtial, J. and Allen, L. (2004) Light's orbital angular momentum. Physics Today, 57(5), pp. 35-40. (doi: 10.1063/1.1768672)
Sinclair, G., Leach, J., Jordan, P., Gibson, G. , Yao, E., Laczik, Z. J., Padgett, M. and Courtial, J. (2004) Interactive application in holographic optical tweezers of a multi-plane Gerchberg-Saxton algorithm for three-dimensional light shaping. Optics Express, 12(8), pp. 1665-1670. (doi: 10.1364/OPEX.12.001665)
Leach, J., Sinclair, G., Jordan, P., Courtial, J. , Padgett, M. J. , Cooper, J. and Laczik, Z. J. (2004) 3D manipulation of particles into crystal structures using holographic optical tweezers. Optics Express, 12(1), pp. 220-226. (doi: 10.1364/OPEX.12.000220)
Leach, J., Courtial, J. , Skeldon, K., Barnett, S. M. , Franke-Arnold, S. and Padgett, M. J. (2004) Interferometric methods to measure orbital and spin, or the total angular momentum of a single photon. Physical Review Letters, 92(1), 013601. (doi: 10.1103/PhysRevLett.92.013601)
Bouchal, Z. and Courtial, J. (2004) The connection of singular and nondiffracting optics. Journal of Optics A: Pure and Applied Optics, 6(5), S184-S188. (doi: 10.1088/1464-4258/6/5/008)
Watterson, C. M.G., Padgett, M. J. and Courtial, J. (2003) Classic-fractal eigenmodes of unstable canonical resonators. Optics Communications, 223(1-3), 17 -23. (doi: 10.1016/S0030-4018(03)01620-1)
Forrester, A., Courtial, J. and Padgett, M.J. (2003) Performance of a rotating aperture for spinning and orienting objects in optical tweezers. Journal of Modern Optics, 50(10), 1533 -1538. (doi: 10.1080/0950034021000020798)
Wei, H.Q., Xue, X., Leach, J., Padgett, M.J., Barnett, S.M., Franke-Arnold, S., Yao, E. and Courtial, J. (2003) Simplified measurement of the orbital angular momentum of single photons. Optics Communications, 223(1-3), 117 -122. (doi: 10.1016/S0030-4018(03)01619-5)
Leach, J., Padgett, M.J. and Courtial, J. (2003) Fractals in pixellated video feedback. Contemporary Physics, 44(2), 137 -143. (doi: 10.1080/0010751021000029598)
Bingelyte, V., Leach, J., Courtial, J. and Padgett, M.J. (2003) Optically controlled three-dimensional rotation of microscopic objects. Applied Physics Letters, 82(5), 829 -831. (doi: 10.1063/1.1544067)
Forrester, A., Lonnqvist, M., Padgett, M. J. and Courtial, J. (2002) Why are the eigenmodes of stable laser resonators structurally stable? Optics Letters, 27(21), 1869 -1871. (doi: 10.1364/OL.27.001869)
Leach, J., Padgett, M. J. , Barnett, S. M. , Franke-Arnold, S. and Courtial, J. (2002) Measuring the orbital angular momentum of a single photon. Physical Review Letters, 88(25), p. 257901. (doi: 10.1103/PhysRevLett.88.257901)
Chavez-Cerda, S., Padgett, M.J. , Allison, I., New, G.H.C., Gutierrez-Vega, J.C., O'Neil, A.T., MacVicar, I. and Courtial, J. (2002) Holographic generation and orbital angular momentum of high-order mathieu beams. Journal of Optics B: Quantum and Semiclassical Optics, 4(2), S52 -S57. (doi: 10.1088/1464-4266/4/2/368)
Padgett, M., Courtial, J., Allen, L., Franke-Arnold, S. and Barnett, S.M. (2002) Entanglement of orbital angular momentum for the signal and idler beams in parametric down-conversion. Journal of Modern Optics, 49(5-6), 777 -785. (doi: 10.1080/09500340110108594)
Courtial, J. (2002) Fractal laser mode structure due to iterated diffractive multiple imaging. Journal of Modern Optics, 49, pp. 839-849. (doi: 10.1080/09500340110109719)
Courtial, J. , Leach, J. and Padgett, M.J. (2001) Image Processing: Fractals in pixellated video feedback. Nature, 414(6866), p. 864. (doi: 10.1038/414864a)
Forrester, A., Courtial, J. and Padgett, M. (2001) Fractal generation using optical feedback with incoherent gain. Optics Communications, 190(1-6), 123 -127. (doi: 10.1016/S0030-4018(01)01090-2)
Courtial, J. and Padgett, M. J. (2000) Monitor-outside-a-monitor effect and self-similar fractal structure in the eigenmodes of unstable optical resonators. Physical Review Letters, 85(25), 5320 -5323. (doi: 10.1103/PhysRevLett.85.5320)
Courtial, J. and Padgett, M. J. (2000) Limit to the orbital angular momentum per unit energy in a light beam that can be focused onto a small particle. Optics Communications, 173(1-6), 269 -274. (doi: 10.1016/S0030-4018(99)00619-7)
Courtial, J. and Padgett, M. J. (2000) Generation of self-reproducing fractal patterns using a multiple imaging system with feedback. Journal of Modern Optics, 47(8), 1469 -1474. (doi: 10.1080/095003400403048)
Allen, L., Courtial, J. and Padgett, M.J. (1999) Matrix formulation for the propagation of light beams with orbital and spin angular momenta. Physical Review E, 60(6), 7497 -7503. (doi: 10.1103/PhysRevE.60.7497)
Padgett, M.J. and Courtial, J. (1999) Poincare-sphere equivalent for light beams containing orbital angular momentum. Optics Letters, 24(7), pp. 430-432. (doi: 10.1364/OL.24.000430)
Courtial, J. and Padgett, M.J. (1999) Performance of a cylindrical lens mode converter for producing Laguerre-Gaussian laser modes. Optics Communications, 159(39141), pp. 13-18. (doi: 10.1016/S0030-4018(98)00599-9)
Courtial, J. , Robertson, D.A., Dholakia, K., Allen, L. and Padgett, M.J. (1998) Rotational frequency shift of a light beam. Physical Review Letters, 81(22), pp. 4828-4830. (doi: 10.1103/PhysRevLett.81.4828)
Courtial, J. , Dholakia, K., Robertson, D.A., Allen, L. and Padgett, M.J. (1998) Measurement of the rotational frequency shift imparted to a rotating light beam possessing orbital angular momentum. Physical Review Letters, 80(15), pp. 3217-3219. (doi: 10.1103/PhysRevLett.80.3217)
Courtial, J. , Dholakia, K., Allen, L. and Padgett, M.J. (1997) Gaussian beams with very high orbital angular momentum. Optics Communications, 144(39236), pp. 210-213. (doi: 10.1016/S0030-4018(97)00376-3)
Courtial, J. , Dholakia, K., Allen, L. and Padgett, M.J. (1997) Second-harmonic generation and the conservation of orbital angular momentum with high-order Laguerre-Gaussian modes. Physical Review A: Atomic, Molecular and Optical Physics, 56(5), pp. 4193-4196. (doi: 10.1103/PhysRevA.56.4193)
Courtial, J. , Patterson, B.A., Hirst, W., Harvey, A.R. , Duncan, A.J., Sibbett, W. and Padgett, M.J. (1997) Static Fourier-transform ultraviolet spectrometer for gas detection. Applied Optics, 36(13), pp. 2813-2817. (doi: 10.1364/AO.36.002813)
Patterson, B.A., Antoni, M., Courtial, J. , Duncan, A. J., Sibbett, W. and Padgett, M.J. (1996) An ultra-compact static Fourier-transform spectrometer based on a single birefringent component. Optics Communications, 130(39141), pp. 1-6. (doi: 10.1016/0030-4018(96)00179-4)
Conference Proceedings
Sroor, H., Naidoo, D., Courtial, J. and Forbes, A. (2018) A Novel Laser Resonator for Fractal Modes. In: Laser Resonators, Microresonators, and Beam Control XX, San Francisco, CA, USA, 29 Jan - 1 Feb 2018, 105181N. (doi: 10.1117/12.2290958)
Belin, J. , Oxburgh, S., Tyc, T. and Courtial, J. (2017) Imaging with Pairs of Skew Lenses. In: SPIE Optics and Photonics Conference, San Diego, CA, USA, 06-10 Aug 2017, p. 1037607. ISBN 9781510612099 (doi: 10.1117/12.2272989)
Belin, J. , Tyc, T., Oxburgh, S. and Courtial, J. (2017) Ideal-Lens Stars. In: SPIE Optics and Photonics Conference, San Diego, CA, USA, 06-10 Aug 2017, p. 1037605. ISBN 9781510612099 (doi: 10.1117/12.2272991)
Oxburgh, S., Cowie, E. , Belin, J. and Courtial, J. (2017) Experimental Realisability of Lens Cloaks. In: SPIE Optics and Photonics Conference, San Diego, CA, USA, 06-10 Aug 2017, 103760D. ISBN 9781510612099 (doi: 10.1117/12.2272990)
Bělín, J. , Oxburgh, S., Tyc, T. and Courtial, J. K. (2017) Description of Pairs of Skew Lenses as a Single Lens. In: OSA Frontiers in Optics/Laser Science APS/DLS, Washington, D.C., USA, 16-20 Sep 2017, JTu2A.44. ISBN 9781943580330 (doi: 10.1364/FIO.2017.JTu2A.44)
Bourgenot, C., Courtial, J. , Cowie, E. , Girkin, J., Love, G., Robertson, D. and Young, L. (2017) Design, Manufacture, and Evaluation of Prototype Telescope Windows for Use as Low Vision Aids. In: SPIE Optics and Photonics Conference, San Diego, CA, USA, 06-10 Aug 2017, 103760I. ISBN 9781510612099 (doi: 10.1117/12.2272992)
Oxburgh, S., Gray, N. , Hendry, M. and Courtial, J. (2014) Lorentz-transformation and Galileo-transformation Windows. In: Novel Optical Systems Design and Optimization XVII, San Diego, CA, USA, 17-21 Aug 2014, 91931K. (doi: 10.1117/12.2061415)
Oxburgh, S., White, C. D., Antoniou, G., Mertens, L., Mullen, C., Ramsay, J., Mccall, D. and Courtial, J. (2014) Windows into Non-Euclidean Spaces. In: Novel Optical Systems Design and Optimization XVII, San Diego, CA, USA, 17-21 Aug 2014, p. 919307. (doi: 10.1117/12.2061418)
Oxburgh, S., White, C. D., Antoniou, G., Orife, E. and Courtial, J. (2014) Transformation Optics with Windows. In: Novel Optical Systems Design and Optimization XVII, San Diego, CA, USA, 17-21 Aug 2014, 91931E. (doi: 10.1117/12.2061404)
Stockman, P., Oxburgh, S., Tyc, T. and Courtial, J. (2014) What Do Forbidden Light-ray Fields Look Like? In: Novel Optical Systems Design and Optimization XVII, San Diego, CA, USA, 17-21 Aug 2014, p. 919304. (doi: 10.1117/12.2061409)
Miller, S. W., Nelson, J. and Courtial, J. (2014) Three-dimensional Self-similar Fractal Light in Canonical Resonators. In: Laser Beam Shaping XV, San Diego, CA, USA, 17-19 Aug 2014, 91940Z. (doi: 10.1117/12.2061410)
Strathearn, A., Moncreiff, J., Oxburgh, S. and Courtial, J. (2014) Complex Imaging with Ray-rotating Windows. In: Current Developments in Lens Design and Optical Engineering XV, San Diego, CA, USA, 18-20 Aug 2014, 91920A. (doi: 10.1117/12.2061398)
Gibson, G. , Courtial, J. , Vasnetsov, M., Barnett, S. , Franke-Arnold, S. and Padgett, M. (2004) Increasing the Data Density of Free-space Optical Communications Using Orbital Angular Momentum. In: Free-Space Laser Communications IV, Denver, CO, USA, 02-06 Aug 2004, pp. 367-373. (doi: 10.1117/12.557176)
Courtial, J. , Padgett, M. , Leach, J., Yao, E., Barnett, S. and Franke-Arnold, S. (2003) Measuring the topological charge of optical vortices: from the orbital angular momentum of individual photons to the angular uncertainty principle. In: 1st International Conference on Advanced Optoelectronics and Lasers/1st Workshop on Precision Oscillations in Electronics and Optics, Alushta, Ukraine, 16-20 Sep 2003, ISBN 0780379489 (doi: 10.1109/CAOL.2003.1250503)
Leach, J., Franke-Arnold, S. , Courtial, J. , Yao, E., Barnett, S. and Padgett, M. (2003) Measurement of the Angle-angular Momentum Uncertainty of a Light Beam. In: 5th International Workshop on Laser and Fiber-Optical Networks Modeling, Alushta, Ukraine, 19-20 Sep 2003, p. 145. ISBN 9780780377097 (doi: 10.1109/LFNM.2003.1246106)
Teaching
Workshops
- Research Skills PHYS5015
Lectures
- Physics 2: Electricity and Magnetism PHYS2001
