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New method of wavelength stabilisation in CPT atomic clocks
Author(s): Sergey Kobtsev; Daba Radnatarov; Sergey Khripunov; Valerii Andryushkov; Yurii Zarudnev
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Paper Abstract

We propose a novel way of radiation wavelength stabilisation in atomic clocks based on coherent population trapping (CPT). It uses quadrature-phase component of the CPT signal within the CPT resonance feedback loop and automatic wavelength locking of radiation from a VCSEL to the atomic absorption line. We demonstrate advantages and limitations of the new method applied to vapour cells with buffer gas or anti-relaxation coating. Also provided are measurements of short- and long-term stability of a CPT-based atomic clock using the proposed method with various optical cells. Discussed are the prospects of this method in chip-scale atomic clocks.

Paper Details

Date Published: 19 November 2019
PDF: 6 pages
Proc. SPIE 11184, Optoelectronic Devices and Integration VIII, 1118414 (19 November 2019); doi: 10.1117/12.2537814
Show Author Affiliations
Sergey Kobtsev, Novosibirsk State Univ. (Russian Federation)
Daba Radnatarov, Novosibirsk State Univ. (Russian Federation)
Sergey Khripunov, Novosibirsk State Univ. (Russian Federation)
Valerii Andryushkov, Novosibirsk State Univ. (Russian Federation)
Yurii Zarudnev, Novosibirsk State Univ. (Russian Federation)
Tekhnoscan-Lab LLC (Russian Federation)


Published in SPIE Proceedings Vol. 11184:
Optoelectronic Devices and Integration VIII
Xuping Zhang; Baojun Li; Changyuan Yu; Xinliang Zhang; Daoxin Dai, Editor(s)

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