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Short-term stability of Cs microcell-stabilized lasers using dual-frequency sub-Doppler spectroscopy

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Abstract

The combination of atomic spectroscopy, integrated photonics, and microelectromechanical systems leads the way to the demonstration of microcell-based optical atomic clocks. Here, we report the short-term stability budget of table-top Cs microcell-stabilized lasers based on dual-frequency sub-Doppler spectroscopy (DFSDS). The dependence of the sub-Doppler resonance properties on key experimental parameters is studied. The detection noise budget and absolute phase noise measurements are in good agreement with the measured short-term frequency stability of the laser beatnote, at the level of $1.1 \times {10^{- 12}} {\tau ^{- 1/2}}$ until 100 s, currently limited by the intermodulation effect from a distributed-feedback laser setup. The fractional frequency stability of the laser beatnote at 1 s is about 100 times greater than that of commercial microwave chip-scale atomic clocks and validates interest in the DFSDS approach for the development of high-performance microcell-based optical standards.

© 2021 Optical Society of America

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Corrections

A. Gusching, M. Petersen, N. Passilly, D. Brazhnikov, M. Abdel Hafiz, and R. Boudot, "Short-term stability of Cs microcell-stabilized lasers using dual-frequency sub-Doppler spectroscopy: erratum," J. Opt. Soc. Am. B 40, 501-501 (2023)
https://opg.optica.org/josab/abstract.cfm?uri=josab-40-3-501

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Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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