Light served with a twist - to unsuspecting atoms

Main list: Physics and Astronomy Colloquia

Abstract

Dr Sonja Franke Arnold
University of Glasgow

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 imprint and read-out 3D structures into a room temperature rubidium vapour, (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.

 

  • Venue

    Physics Theatre C

  • Date

    April 27, 2018

  • Time

    From: 10h00 To: 11h00

  • Sponsor

    University of St Andrews
    The oldest university in Scotland, with international renown for both research and education of undergraduates and postgraduates.

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