Next colloquium
Tuesday, 30 January at 3 pm in Boyd Orr LT412
Robert Fickler (Tampere University)
Complex structured light and its interaction with matter
Shaping light fields in time, space, and polarization has become a versatile tool to explore fundamental optics effects and explore fruitful applications in various fields of photonics. In this talk, I will present two of our recent studies in this thriving branch of optics
At first, I will describe our recent results in structuring light in polarization, space, and wavelength. Through a combination of a polarization-dependent modulation in time and in orbital angular momentum, we are able to realize pulses of light, that are fully correlated in all three degrees of freedom, which we term spatio-spectral vector beams. We show that such beams have a complex polarization pattern over the wavelength spectrum as well as transverse angle. We further explore an interesting feature, namely that the degree of polarization of the field is only unveiled when the field is narrowly defined in space and wavelength, which is analog to non-separable quantum systems.
In the second part of the talk, I will discuss higher-order aberration effects that are natural to reflections of light with spatial structures such as phase vortices. In such scenarios, it was predicted that higher-order vortices split into a constellation of unit-charged vortices, a phenomenon termed as topological aberration. We were able to observe this phenomenon for the first time experimentally through the transformation of a vortex constellation upon reflection. We developed a general theoretical framework to study topological aberrations in terms of elementary symmetric polynomials of the coordinates of a vortex constellation. This mathematical abstraction, which we prove to be the physical quantity of interest, not only allowed us to verify the effect experimentally, but might also be applicable to vortex constellations of more complex structured light fields as well as other physical systems e.g. superfluids and Bose-Einstein condensates.
Colloquia and Seminars 2023/24
2023
Date |
Time |
Room |
Speaker |
Title |
---|---|---|---|---|
14 September |
3 pm |
312 |
Richard Bowman |
Smart microscopy for everyone with open source hardware |
9 October |
3 pm |
222 |
Philip Mannheim (Connecticut) |
Why there are dark matter, dark energy and quantum gravity problems |
18 October |
3 pm |
312 |
Caroline Müllenbroich |
Cardiac imaging of function and structure across scales |
1 November |
3 pm |
312 |
Gregor Harvie |
Patterns of the creator |
7 November |
4 pm |
312 |
Sarah Haigh (Machester) |
Atomic resolution TEM imaging of solid-liquid interfaces enabled via 2D material heterostructures |
29 November |
3 pm |
312 |
Niclas Westerberg |
Using and producing quantum light. Among other things. |
14 December |
3 pm |
312 |
Peter Athron (Nanjing Normal) |
From cosmological phase transitions to gravitational waves |
2024
Date |
Time |
Speaker |
Title |
---|---|---|---|
10 January |
3 pm |
Igor Jex (TU Prague) |
Open quantum dynamics and quantum networks |
24 January |
3 pm |
Gavin Lamb (LJMU) |
Long duration gamma-ray bursts, heavy metal, and neutron star mergers |
30 January |
3 pm |
Robert Fickler (Tampere) |
Complex structured light and its interaction with matter |
14 February |
3 pm |
Michelle Heurs (Hanover) |
Interferometric gravitational wave detection — a (quantum) metrological challenge |
20 March |
3 pm |
Chris Bouchard |
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General information
You view the upcoming (and past) collquia talks at the Events Management System, and you can also subscribe to calendar updates via RSS or iCal.
All are welcome!
Contact
Questions? Comments? Speaker suggestions?
Please use the dedicated contact Dr Jörg Götte for colloquia or Dr Giulio Butera for seminars.
Joerg.Goette@glasgow.ac.uk
Kelvin Building
Room 523
Ext 7563
Salvatore.Butera@glasgow.ac.uk
Kelvin Building
Room 521
Ext xxxx