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Enhancement of collective atomic recoil lasing due to pump phase modulation

Robb, G.R.M. and Burgess, R.T.L. and Firth, W.J. (2008) Enhancement of collective atomic recoil lasing due to pump phase modulation. Physical Review A, 78 (4). ISSN 1094-1622

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Abstract

We investigate the effect of a phase-modulated pump beam on collective backscattering also termed collective atomic recoil lasing CARL by a cold, collisionless atomic gas. We show using a numerical analysis that different regimes can be identified in which the atomic dynamics evolves in a qualitatively different manner during the light-atom interaction, depending on the magnitude of the pump modulation frequency. Our results also demonstrate that phase-modulating the pump field can substantially enhance the backscattered field