A Temperature Control Circuit with Small Size and Low Power Consumption for CPT Atomic Frequency Standard

ZHENG Jin-zhou1,2, CHEN Jie-hua1,2, LIU Chao-yang1, GU Si-hong1

（1. Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;

2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China） 

Abstract：In order to meet the requirement of miniature, low power consumption CPT(coherent population trapping) atomic frequency standard, a temperature control circuit based on power regulator is proposed and realized. The experimental results show that as compared with commonly used circuits, this proposed circuit achieves the equal temperature control capability while the power consumption and the circuit size are reduced by 25% and by half respectively. Therefore, it is an ideal temperature control circuit for miniature, low power consumption CPT atomic frequency standard, and it provides also an alternative temperature control circuit for other similar applications.

Key words: temperature control circuit; atomic frequency standard; power regulator