Chinese Optics Letters, 2014, 12 (s2): S22205, Published Online: Nov. 12, 2014  

Optical system design of a portable coherent population trapping (CPT) atom clock Download: 676次

Author Affiliations
1 Beijing Institute of Radio Metrology &
2 Measurement, Beijing 100039, China
3 Science and Technology on Metrology and Calibration Laboratory, Beijing 100039, China
Abstract
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 indi-cate that the optical system is a promising candidate for a portable CPT atom clock engineering prototype.

Fan Shi, Yongshun Cui, Zhenwei Zhang, Huan Zhao, Nuanrang Wang, Shengkang Zhang, Renfu Yang, Feng Nian, Keming Feng. Optical system design of a portable coherent population trapping (CPT) atom clock[J]. Chinese Optics Letters, 2014, 12(s2): S22205.

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