Optical system design of a portable coherent population trapping （CPT） atom clock  

作　　者：石凡 崔永顺 张振伟 赵环 王暖让 张升康 杨仁福 年丰 冯克明 

机构地区：[1]Beijing Institute of Radio Metrology & Measurement, Beijing 100039, China [2]Science and Technology on Metrology and Calibration Laboratory, Beijing 100039, China

出　　处：《Chinese Optics Letters》2014年第A02期125-127,共3页中国光学快报（英文版）

摘　　要：We present the mechanism of coherent population trapping （CPT） atom clock. The optical system is designed for a portable CPT atom clock. In this system, single transverse mode vertical-cavity surface-emitting laser is used as a miniature pump laser. The driven circuit is designed based on a field-programmable gate array full digital control system and special-purpose chip MAX1968. The experimental results show that the optical system can provide circularly polarized light, and has small volume and low power consumption. These indicate that the optical system is a promising candidate for a portable CPT atom clock engineering prototype.We present the mechanism of coherent population trapping （CPT） atom clock. The optical system is designed for a portable CPT atom clock. In this system, single transverse mode vertical-cavity surface-emitting laser is used as a miniature pump laser. The driven circuit is designed based on a field-programmable gate array full digital control system and special-purpose chip MAX1968. The experimental results show that the optical system can provide circularly polarized light, and has small volume and low power consumption. These indicate that the optical system is a promising candidate for a portable CPT atom clock engineering prototype.

分 类 号：TN141.32[电子电信—物理电子学] TH740.2[机械工程—光学工程]