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|Title:||Runaway evaporation for optically dressed atoms||Authors:||Wilkowski, D.||Issue Date:||28-Oct-2010||Citation:||Wilkowski, D. (2010-10-28). Runaway evaporation for optically dressed atoms. Journal of Physics B: Atomic, Molecular and Optical Physics 43 (20) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0953-4075/43/20/205306||Abstract:||Forced evaporative cooling in a far-off-resonance optical dipole trap is proved to be an efficient method to produce fermionic-or bosonic-degenerated gases. However, in most of the experiments, the reduction of the potential height occurs with a diminution of the collision elastic rate. Taking advantage of a long-living excited state, like in two-electron atoms, I propose a new scheme, based on an optical knife, where the forced evaporation can be driven independently of the trap confinement. In this context, the runaway regime might be achieved leading to a substantial improvement of the cooling efficiency. The comparison with the different methods for the forced evaporation is discussed in the presence or absence of three-body recombination losses. © 2010 IOP Publishing Ltd.||Source Title:||Journal of Physics B: Atomic, Molecular and Optical Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/126317||ISSN:||09534075||DOI:||10.1088/0953-4075/43/20/205306|
|Appears in Collections:||Staff Publications|
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