A Compact Laser System for the Pulsed Optically Pumped Rubidium Cell Atomic Clock

被引：3
|
作者：
Yu, Zhijian [1 ,2 ]
Du, Zhijing [1 ]
Liu, Yanyan [1 ]
Wang, Kemu [1 ,2 ]
Xue, Wenxiang [1 ]
Zhang, Shougang [1 ]
机构：
[1] Chinese Acad Sci, Key Lab Time & Frequency Primary Stand, Natl Time Serv Ctr, Xian 710600, Peoples R China
[2] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
来源：
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 2022年 / 69卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Atomic clocks; compact laser; pulsed regime; rubidium (Rb) cell; short-term stability; FREQUENCY-STABILITY; DIODE-LASER; SATURATED ABSORPTION; PHASE NOISE; 780; NM; STANDARDS; OPERATION; HELIUM;
D O I：
10.1109/TUFFC.2022.3140244
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
We describe the design and implementation of a compact laser system for the pulsed optically pumped (POP) rubidium (Rb) cell atomic clock. The laser system includes packaged optics for sub-Doppler absorption, acousto-optic modulation and light beam expansion, and dedicated electronics for laser diode reliable single-mode operation and laser frequency stabilization. With beat measurements between two identical laser systems, the laser frequency stability was found to be 3.0 x 10(-12) for averaging times from 1 to 60 s and it reached 3.5 x 10(-12) at 10 000 s averaging time. Based on the compact laser system, the short-term stability of the Rb cell atomic clock in pulsed regime was approximately 2.7 x 10(-13) tau(-1/2), which is in reasonable agreement with the estimated 2.37 x 10(-13) tau(-1/2). The compact laser system is significant in terms of the development of transportable and high-performance Rb atomic clock prototypes.
引用
收藏
页码：1137 / 1146
页数：10
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