Lamb-dips and Lamb-peaks in the saturation spectrum of HD

Abstract

The saturation spectrum of the R(1) transition in the (2-0) band in HD is found to exhibit a composite line shape, involving a Lamb-dip and a Lamb-peak. We propose an explanation for such behavior based on the effects of cross-over resonances in the hyperfine substructure, which is made quantitative in a density-matrix calculation. This resolves an outstanding discrepancy on the rovibrational R(1) transition frequency, which is now determined at 217 105 181 901 (50) kHz and in agreement with current theoretical calculations.

References in corpus (8)

• Bounds on fifth forces from precision measurements on molecules
• Sub-Doppler frequency metrology in HD for test of fundamental physics
• Toward a determination of the proton-electron mass ratio from the Lamb-dip measurement of HD
• Nonadiabatic QED correction to the dissociation energy of the hydrogen molecule
• Constraints on extra dimensions from precision molecular spectroscopy
• Dissociation energy of the hydrogen molecule at 10${}^{-9}$ accuracy
• Progress towards an accurate determination of the Boltzmann constant by Doppler spectroscopy
• Nonadiabatic relativistic correction in H${}_2$, D${}_2$, and HD

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• Hyperfine structure in the HD molecule
• Fano-like resonance due to interference with distant transitions
• Leading-order QED effects in the ground electronic state of molecular hydrogen
• Rotational level spacings in HD from vibrational saturation spectroscopy
• Highly coherent phase-lock of an 8.1 $\mu$m quantum cascade laser to a turn-key mid-IR frequency comb
• Nonrelativistic energy of tritium-containing hydrogen molecule isotopologues
• Near-to mid-IR spectral purity transfer with a tunable frequency comb: methanol frequency metrology over a record frequency span
• A Stimulated Raman Loss spectrometer for metrological studies of quadrupole lines of hydrogen isotopologues
• Doppler-free high resolution continuous wave optical UV-spectroscopy on the $\mathrm{A}{}^2{\Sigma }^{+}\leftarrow \mathrm{X}{}^2{\Pi }_{3/2}$ transition in nitric oxide
• Hyperfine and Zeeman interactions in ultracold collisions of molecular hydrogen with atomic lithium