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    Particularities of optical pumping effects in cold and ultra-slow beams of Na and Cs in the case of cyclic transitions

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    Type
    Article
    Authors
    Bruvelis, M. cc
    Cinins, A.
    Leitis, A.
    Efimov, D. K.
    Bezuglov, N. N.
    Chirtsov, A. S.
    Fuso, F.
    Ekers, Aigars cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Date
    2015-12-09
    Online Publication Date
    2015-12-09
    Print Publication Date
    2015-12
    Permanent link to this record
    http://hdl.handle.net/10754/621409
    
    Metadata
    Show full item record
    Abstract
    The time-dependent population dynamics of hyperfine (HF) levels of n2p3/2 states is examined for cyclic transitions in alkali atoms. We study a slow and cold atomic beam of Na (n = 3) and Cs (n = 6), taking into account the long interaction time of light with atoms (~200 μs) inside the resonant laser beam. Simple analytical expressions for the populations of the excited states and for the intensities of the absorption lines are derived for a three-level system model. We show that at moderate pump laser power the mixing of HF levels is sufficient to form a flow of population from a cyclic transition to partially open transitions. We discuss various phenomena associated with the evolution of optical pumping that cannot be explained by general analysis of two-level system model.
    Citation
    Bruvelis M, Cinins A, Leitis A, Efimov DK, Bezuglov NN, et al. (2015) Particularities of optical pumping effects in cold and ultra-slow beams of Na and Cs in the case of cyclic transitions. Opt Spectrosc 119: 1038–1048. Available: http://dx.doi.org/10.1134/S0030400X1512005X.
    Sponsors
    This work was supported by the Government of the Russian Federation Grant 074-U01, with partial funding from the European Commission projects EU FP7 IAPP COLDBEAM and EU FP7 Centre of Excellence FOTONIKA-LV (REGPOT-CT-2011-285912-FOTONIKA), and the US Office of Naval Research Grant No. N00014-12-1-0514.
    Publisher
    Pleiades Publishing Ltd
    Journal
    Optics and Spectroscopy
    DOI
    10.1134/S0030400X1512005X
    ae974a485f413a2113503eed53cd6c53
    10.1134/S0030400X1512005X
    Scopus Count
    Collections
    Articles; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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