1 Citation (Scopus)

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.

Original languageEnglish
Title of host publicationOptoelectronic Devices and Integration VIII
EditorsXuping Zhang, Baojun Li, Changyuan Yu, Xinliang Zhang, Daoxin Dai
PublisherSPIE
Number of pages6
ISBN (Electronic)9781510630857
DOIs
Publication statusPublished - 19 Nov 2019
EventOptoelectronic Devices and Integration VIII 2019 - Hangzhou, China
Duration: 22 Oct 201923 Oct 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11184
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptoelectronic Devices and Integration VIII 2019
CountryChina
CityHangzhou
Period22.10.201923.10.2019

Keywords

  • Atomic clock
  • CPT resonance
  • Optic cell
  • Quadrature signal
  • Rubidium
  • optic cell
  • rubidium
  • quadrature signal

Fingerprint Dive into the research topics of 'New method of wavelength stabilisation in CPT atomic clocks'. Together they form a unique fingerprint.

Cite this