Absolute frequency determination of molecular transition in the Doppler regime at kHz level of accuracy

Abstract

We present absolute frequency measurement of the unperturbed P7 P7 O${}_2$ B-band transition with relative standard uncertainty of $2\times 10^{-11}$. We reached the level of accuracy typical for Doppler-free techniques, with Doppler-limited spectroscopy. The Doppler-limited shapes of the P7 P7 spectral line were measured with a frequency-stabilized cavity ring-down spectrometer referenced to an ${}^{88}$Sr optical atomic clock by an optical frequency comb.

References in corpus (3)

• Absolute measurement of the ${}^1{S}_0$ - ${}^3{P}_0$ clock transition in neutral ${}^{88}$Sr over the 330 km-long stabilized fibre optic link
• Strontium optical lattice clocks for practical realization of the metre and secondary representation of the second
• Absolute Frequency Measurement of Rubidium 5S-7S Two-Photon Transitions

Cited by in corpus (3)

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• Searching for New Fundamental Interactions via Isotopic Shifts in Molecular Lattice Clocks