Light served with a twist - to unsuspecting atoms

26 February 2018, 5.00 PM - 26 February 2018, 6.00 PM

Dr Sonja Franke-Arnold (University of Glasgow)

Frank lecture theatre

Since (at least) a quarter of a century researchers are fascinated by twisted light, i.e. light that carries orbital angular momentum. I am one of them!  

At Glasgow we routinely use a variety of techniques to imprint structure in the spatial amplitude, phase and polarisation of a light beam.  In my team we specialise on the interaction of structured light with (rubidium) atoms: from cold ones at tens of Microkelvin to atomic gasses at room temperature and above.  I will talk about three of our experiments: (1) how to visualise 3D optical structures from scattering off a room temperature vapour cell, (2) the conversion of twisted light from the near infrared to blue based on four wave mixing in a warm vapour cell and (3) imprinting of optical phase and polarisation information into ground state coherences of cold atoms.

Contact information

For further information, contact Molly Hackett at

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