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

作　　者：刘智 王杰英 刁文婷 何军 王军民 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices (Shanxi University), and Institute of Opto-Electronics, Shanxi University

出　　处：《Chinese Physics B》2013年第4期232-236,共5页中国物理B（英文版）

基　　金：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);the Project for Excellent Research Team of the National Natural Science Foundation of China (Grant No. 61121064)

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

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

分 类 号：TN248[电子电信—物理电子学]