Optimization of the experimental parameters of cesium CPT system

Zhi Liu; Jieying Wang; Wenting Diao; Jun He; Junmin Wang

doi:10.1117/12.999897

29 November 2012 Optimization of the experimental parameters of cesium CPT system

Zhi Liu, Jieying Wang, Wenting Diao, Jun He, Junmin Wang

Proceedings Volume 8554, Quantum and Nonlinear Optics II; 85541G (2012) https://doi.org/10.1117/12.999897
Event: Photonics Asia, 2012, Beijing, China

Abstract

Based on a Λ-type three-level system consists of cesium (Cs) 6S_1/2 (Fg = 3) and 6S1/2 (Fg = 4) long-lived ground states and 6P_3/2 (Fe = 4) excited state, we have experimentally measured and theoretically analyzed the characters of coherent population trapping (CPT) resonances in Cs vapor cells with different partial pressure of neon (Ne) as buffer gas around room temperature. The impact of some experimental parameters, such as the relative intensity ratio between two phase-locked laser beams, the laser intensity, with or without buffer gas and the partial pressure of Ne, the temperature and the longitudinal magnetic field, on the CPT resonance was studied in details. With the optimized parameters, we got typical CPT signal with the full-width half-maximum (FWHM) linewidth as narrow as ~ 181 Hz in a Cs vapor cell filled with 30 Torr of Ne as buffer gas.

Citation Download Citation

Zhi Liu, Jieying Wang, Wenting Diao, Jun He, and Junmin Wang "Optimization of the experimental parameters of cesium CPT system", Proc. SPIE 8554, Quantum and Nonlinear Optics II, 85541G (29 November 2012); https://doi.org/10.1117/12.999897

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