An inverted crossover resonance aiding laser cooling of171 yb

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    © 2016 Optical Society of America.We observe an inverted crossover resonance in f-driven four-level systems, where F' - F = 0; + 1. The signal is observed through saturated absorption spectroscopy of the (6s2 )1 S0-(6s6p) 3 P1 transition in 171Yb, where the nuclear spin I = 1?2. The enhanced absorption signal is used to generate a dispersive curve for 556 nm laser frequency stabilization and the stabilized light cools 171Yb atoms in a two-stage magneto-optical trap, achieving temperatures of 20 µK. The Doppler-free spectroscopy scheme is further used to measure isotopic frequency shifts and hyperfine separations for the inter-combination line in ytterbium.
    Original languageEnglish
    Pages (from-to)1278-1285
    Number of pages8
    JournalJournal of the Optical Society of America B: Optical Physics
    Issue number6
    Early online date25 May 2016
    Publication statusPublished - 1 Jun 2016


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