Optical nutation in cold85Rb atoms

Unyob Shim, Sidney B. Cahn, Anantharaman Kumarakrishnan, Tycho Sleator, Jin Tae Kim

    Research output: Contribution to journalArticlepeer-review


    We have observed optical nutation in cold 85Rb atoms with a negligible Doppler broadening. The optical nutation of a two-level atom arranged by optical pumping has been studied as a function of detuning frequency and Rabi frequency. The change of the nutation signal caused by magnetic substate degeneracy has also been observed for σ and π excitations. This can be explained by optical nutation beatings from different transition probabilities among magnetic sublevels. Absolute transition probabilities with σ and π transitions and a branching ratio between them have been measured.

    Original languageEnglish (US)
    Pages (from-to)168-173
    Number of pages6
    JournalJapanese Journal of Applied Physics, Part 2: Letters
    Issue number1 A
    StatePublished - Jan 2005


    • Branching ratio
    • Cold atom
    • Nutation
    • Rubidium
    • Transition probability
    • Trap

    ASJC Scopus subject areas

    • General Engineering
    • General Physics and Astronomy


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