Effect of optical pumping on alkali-atom Doppler-limited spectra

Thomas Lindvall, I. Tittonen

    Research output: Contribution to journalArticleScientificpeer-review

    19 Citations (Scopus)


    Using a three-level model and semiclassical density matrix formalism, we show that optical pumping influences both line positions and amplitudes in Doppler-broadened alkali-atom D1 and D2 spectra for intensities much lower than the two-level atom saturation intensity. The influence on the D2 spectrum is particularly interesting due to the presence of closed hyperfine transitions unaffected by optical pumping. This effect is of importance for example when lasers are frequency stabilized using linear absorption or when the alkali-atom vapour pressure is determined using absorption measurements.

    Original languageEnglish
    Pages (from-to)2779-2793
    JournalJournal of Modern Optics
    Issue number18
    Publication statusPublished - 1 Dec 2007
    MoE publication typeA1 Journal article-refereed


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