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Time dependence of laser cooling in optical lattices | | Claude M. Dion
; Peder Sjolund
; Stefan J. H. Petra
; Svante Jonsell
; Anders Kastberg
; | | Date: |
14 Jun 2005 | | Journal: | Europhys. Lett., 72 (3), pp. 369-375 (2005) DOI: 10.1209/epl/i2005-10244-6 | | Subject: | Atomic Physics | physics.atom-ph quant-ph | | Abstract: | We study the dynamics of the cooling of a gas of caesium atoms in an optical lattice, both experimentally and with 1D full-quantum Monte Carlo simulations. We find that, contrary to the standard interpretation of the Sisyphus model, the cooling process does not work by a continuous decrease of the average kinetic energy of the atoms in the lattice. Instead, we show that the momentum of the atoms follows a bimodal distribution, the atoms being gradually transferred from a hot to a cold mode. We suggest that the cooling mechanism should be depicted in terms of a rate model, describing the transfer between the two modes along with the processes occurring within each mode. | | Source: | arXiv, physics/0506119 | | Services: | Forum | Review | PDF | Favorites | |
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