Photons in the Ultra-cold Gas

  • J. T. Mendonça
  • Hugo Terças
Part of the Springer Series on Atomic, Optical, and Plasma Physics book series (SSAOPP, volume 70)


In this chapter, we discuss the properties of laser beam propagation in the ultra-cold gas, by focusing mainly our attention on the specific properties of this medium. We first consider the linear and nonlinear dispersion properties of light. The novelty here is that the laser beams used for atom cooling can couple to the low frequency oscillations of the atomic cloud. In particular they can destabilize the hybrid sound inside the gas, therefore generating small scale oscillations, which can be the seed for turbulence in the medium. Under certain conditions, the laser beam can become modulationaly unstable, and photon bubbles can eventually be formed.


Dispersion Relation Test Particle Atom Density Density Perturbation Scattered Field 
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Copyright information

© Springer Science+Business Media, LLC 2013

Authors and Affiliations

  • J. T. Mendonça
    • 1
  • Hugo Terças
    • 2
  1. 1.Instituto Superior TecnicoLisbonPortugal
  2. 2.Université Blaise PascalAubière CedexFrance

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