An inverted crossover resonance within one Zeeman manifold

Abstract

We carry out investigations of inverted crossover resonances in $\pi$-driven four-level systems where $\Delta F$ can be zero. Through the use of sub-Doppler frequency modulation spectroscopy of the $(6s^2)$ ${}^1{S}_0$ $-$ $(6s6p)$ ${}^3{P}_1$ transition in ${}^{171}$Yb 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 $F^{\prime }=1/2$ hyperfine line recorded over two months demonstrate a statistical uncertainty of $2\times 10^{-11}$. The inverted crossover resonance found with the $F^{\prime }=3/2$ line is used for 556 nm laser frequency stabilization, which is an alternative means when applied to magneto-optical trapping of ${}^{171}$Yb.

18 pages, 11 figures

References in corpus (11)

• Observation of many-body localization of interacting fermions in a quasi-random optical lattice
• Observation of two-orbital spin-exchange interactions with ultracold SU(N)-symmetric fermions
• Degenerate Fermi Gases of Ytterbium
• Frequency ratio of Yb and Sr clocks with $5\times 10^{-17}$ uncertainty at 150 s averaging time
• An ytterbium quantum gas microscope with narrow-line laser cooling
• An atomic clock with $1\times 10^{-18}$ room-temperature blackbody Stark uncertainty
• Frequency ratios of Sr, Yb and Hg based optical lattice clocks and their applications
• Absolute frequency measurement of the 1S0 - 3P0 transition of 171Yb
• Four-level N-scheme crossover resonances in Rb saturation spectroscopy in magnetic fields
• Inverted crossover resonance aiding laser cooling of ${}^{171}$Yb
• Clock and inter-combination line frequency separation in ${}^{171}$Yb

Cited by in corpus (3)

• Hyperfine constants and line separations for the ${}^1{S}_0-{}^3{P}_1$ intercombination line in neutral ytterbium with sub-Doppler resolution
• Intercombination line frequencies in ${}^{171}$Yb validated with the clock transition
• Offset sideband locking to iodine for laser cooling on the ${}^1{\mathrm{S}}_0\to {}^3{\mathrm{P}}_1$ transition of ${}^{171}\mathrm{Yb}$