Inverted crossover resonance within one Zeeman manifold

L. A. Salter, E. DeClercq, J. J. McFerran

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4 Citations (Scopus)


We carry out investigations of inverted crossover resonances (ICRs) in π-driven four-level systems where ΔF can be zero. Through the use of sub-Doppler frequency modulation spectroscopy of the (6s2)1S0-(6s6p) 3P1-transition in 171Yb the resonance becomes manifest. The centre frequency is inherently insensitive to first-order Zeeman shifts and equates to the two-level resonance frequency in the absence of a magnetic field. A rate equation model is used to help validate the nature of the resonance. Optical frequency measurements of the F'= 1/2 hyperfine line recorded over two months demonstrate a statistical uncertainty of 2 × 10-11. The ICR found with the F'= 3/2 line is used for 556 nm laser frequency stabilisation, which is an alternative means when applied to magneto-optical trapping of 171Yb.

Original languageEnglish
Article number165003
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number16
Publication statusPublished - 2 Aug 2017


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