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Dark-state cooling in the presence of gravity: Gravitational limit of laser cooling

  • ENS-Université PSL

Research output: Contribution to journalArticlepeer-review

Abstract

Dark-state cooling of atoms in the presence of a uniform external (gravity) field is investigated. The external field leads to a finite lifetime for the dark state and thereby to a lower limit for the temperatures obtainable. The minimum temperature in the presence of a gravity field is found to be [Formula Presented]∼Mgλ/2π (where M is the atom mass, λ the wavelength of the cooling laser). This limit is shown to be a universal limit for any laser-cooling scheme.

Original languageEnglish
Pages (from-to)1217-1223
Number of pages7
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume55
Issue number2
DOIs
StatePublished - 1997

ASJC Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics

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