Measurement of force-assisted population accumulation in dark states

M.T. Widmer, M.J. Bellanca, W.F. Buell, H. Metcalf, M.R. Doery, E.J.D. Vredenbregt

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    Abstract

    Atoms can be accumulated by velocity-selective coherent population trapping (VSCPT) in dark states of very highly monovelocity, resulting in very narrow distributions. The optical pumping process that permits the population accumulation proceeds by random walk in momentum space and is of limited eff iciency. Several authors have predicted that damping forces can enhance VSCPT in carefully chosen laser f ields. We present corroboration of this idea with measurements showing increased efficiency for VSCPT.
    Original languageEnglish
    Pages (from-to)606-614
    JournalOptics Letters
    Volume21
    Issue number8
    DOIs
    Publication statusPublished - 1 Apr 1996

    Keywords

    • LASER COOLING
    • TRAPPING

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