Robb, G. R. M. (2012) Superradiant exchange of orbital angular momentum between light and cold atoms. Physical Review A, 85 (2). ISSN 1094-1622Full text not available in this repository. (Request a copy from the Strathclyde author)
An analysis of superradiant scattering of light by ultracold atoms is presented in which the pump and scattered light consist of hollow counterrotating Laguerre-Gaussian beams possessing orbital angular momentum. It is shown that the interaction between the Laguerre-Gaussian beams and the atoms can give rise to a superradiant instability in which orbital angular momentum is transferred to the atoms and the probe field is amplified. In the case where the atoms constitute a dilute Bose-Einstein condensate (BEC) that is trapped in a one-dimensional ring geometry, the transfer of orbital angular momentum to the BEC during the instability means that the BEC spontaneously develops rotation in the ring.
|Keywords:||orbital angular momentum , light, optics, cold atoms, Optics. Light, Atomic and Molecular Physics, and Optics|
|Subjects:||Science > Physics > Optics. Light|
|Department:||Faculty of Science > Physics|
|Depositing user:||Pure Administrator|
|Date Deposited:||29 May 2012 09:32|
|Last modified:||02 Dec 2016 03:51|