采用铯原子偏振光谱对894.6 nm 外腔式半导体激光器稳频的实验研究

张岩; 马荣; 刘晋宏; 韩宇宏; 张丽文; 张俊香

doi:doi:10.3788/jqo20172301.0012

量子光学学报, 2017, 23 (1): 87, 网络出版: 2017-05-09

采用铯原子偏振光谱对894.6 nm 外腔式半导体激光器稳频的实验研究

Locking the Frequency of the External Cavity Diode Laser at 894.6 nm Using Polarization Spectroscopy

论文大纲

张岩 ^*马荣刘晋宏韩宇宏张丽文张俊香

作者单位

山西大学光电研究所量子光学与光量子器件国家重点实验室,山西太原 030006

铯原子D1线偏振光谱稳频 cesium D1 line polarization spectroscopy frequency stabilization

摘要

通过铯原子D1线超精细跃迁能级的偏振光谱获得鉴频曲线,利用电子伺服系统将鉴频曲线反馈到894.6 nm 外腔式半导体激光器的压电陶瓷上进行锁定。由于偏振光谱技术不需要对激光器进行调制,因此不会带来额外的噪声。激光器自由运转400 s 内频率起伏为2.35 MHz,采用偏振光谱锁定激光器后400 s 内频率起伏为0.95 MHz,有效抑制了激光器的频率起伏。

Abstract

The laser is locked on the transition F=4→F′=3 of 133Cs D1 line when using polarization spectroscopy technology,in which the polarization spectroscopy as the error signal negatively gives feedback to the electronic servo-system. The frequency stabilization technology does not bring extra frequency noise because it’s a modulation-free frequency locking scheme. The frequency fluctuation is 095 MHz in 400 s when the laser is locked,while it is 235 MHz for free running.

参考文献

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张岩, 马荣, 刘晋宏, 韩宇宏, 张丽文, 张俊香. 采用铯原子偏振光谱对894.6 nm 外腔式半导体激光器稳频的实验研究[J]. 量子光学学报, 2017, 23(1): 87. ZHANG Yan, MA Rong, LIU Jin-hong, HAN Yu-hong, ZHANG Li-wen, ZHANG Jun-xiang. Locking the Frequency of the External Cavity Diode Laser at 894.6 nm Using Polarization Spectroscopy[J]. Acta Sinica Quantum Optica, 2017, 23(1): 87.

采用铯原子偏振光谱对894.6 nm 外腔式半导体激光器稳频的实验研究

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