Characterizing passive coherent population trapping resonance in cesium vapor cell filled with neon as buffer gas

doi:10.1088/1674-1056/22/4/043201

Abstract We present a pair of phase-locked lasers with a 9.2-GHz frequency difference by injection locking of a master laser to an RF-modulation sideband of a slave diode laser. Using this laser system, the coherent population trapping (CPT) signal with a typical linewidth of ～ 182 Hz is obtained in a Cs vapor cell filled with 30 Torr (4 kPa) of neon (Ne) as buffer gas. We investigate the influence of the partial pressure of Ne buffer gas on the CPT linewidth, amplitude, and frequency shift. The results may offer some references for CPT atomic clock and CPT atomic magnetometer.

Keywords: coherent population trapping (CPT) phase locking of two-color lasers cesium (Cs) vapor cell buffer gas

Received: 07 December 2012
Revised: 11 January 2013
Accepted manuscript online:

PACS:	32.70.Jz	(Line shapes, widths, and shifts)
	32.80.Pj
	32.80.Qk	(Coherent control of atomic interactions with photons)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11274213, 61205215, 61078051, and 612279002), the National Major Scientific Research Program of China (Grant No. 2012CB921601), the Research Project for Returned Abroad Scholars from Universities of Shanxi Province, China (Grant No. 2012-015), and the Project for Excellent Research Team of the National Natural Science Foundation of China (Grant No. 61121064).

Corresponding Authors: Wang Jun-Min
E-mail: wwjjmm@sxu.edu.cn

Cite this article:

Liu Zhi (刘智), Wang Jie-Ying (王杰英), Diao Wen-Ting (刁文婷), He Jun (何军), Wang Jun-Min (王军民) Characterizing passive coherent population trapping resonance in cesium vapor cell filled with neon as buffer gas 2013 Chin. Phys. B 22 043201

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Characterizing passive coherent population trapping resonance in cesium vapor cell filled with neon as buffer gas

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