1550nm可搬运超稳激光工程化研制  

Engineering development of 1550nm transportable ultra-stable laser

作　　者：许冠军[1,2] 焦东东[1,2] 张林波[1,2] 高静[1,2] 刘军[1,2] 范乐[1,2] 陈龙 董瑞芳[1,2] 刘涛[1,2] 张首刚[1,2] XU Guan-jun;JIAO Dong-dong;ZHANG Lin-bo;GAO Jing;LIU Jun;FAN Le;CHEN Long;DONG Rui-fang;LIU Tao;ZHANG Shou-gang(National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China;Key Laboratory of Time and Frequency Primary Standards,Chinese Academy of Sciences,Xi’an 710600,China)

机构地区：[1]中国科学院国家授时中心,西安710600 [2]中国科学院时间频率基准重点实验室,西安710600

出　　处：《时间频率学报》2021年第4期244-254,共11页Journal of Time and Frequency

基　　金：“十三五”国家重大科技基础设施资助项目(2018777);西安市科技局资助项目(E019XK1S04)。

摘　　要：为了满足高精度地基授时系统项目的需求,本文对1 550 nm可搬运超稳激光系统进行了工程化研究。对5 cm长的光学参考腔进行了振动敏感度优化,最终其优于1×10^(-11)/g。完成了光学参考腔的自研,测得其精细度为78 000。对光学、真空系统以及电子学系统进行了集成化设计,整机总体积约为360 mm×380 mm×300 mm,总质量约为20 kg。通过拍频比对,其线宽约为1.41 Hz,频率稳定度小于1×10^(-14)@1 s。从实验测量结果可以看出,该超稳激光基本满足了地基授时项目工程化要求,同时也为国内可搬运超稳激光器的研究奠定了基础。In order to meet the needs of the High-precision Ground-based Time Service System, the engineering research of a 1 550 nm transportable ultra-stable laser was carried out in this paper. The vibration sensitivity of the 5 cm long optical reference cavity was optimized, which is better than 1×10^(-11)/g. The finesse of the optical reference cavity is 78 000. The integrated designs of the optical and vacuum systems were carried out. The total volume of the whole system is about 360 mm×380 mm×300 mm, and the total mass is about 20 kg. The linewidth of this ultra-stable laser is about 1.41 Hz, and its frequency instability is less than 1×10^(-14)at 1 s. From the experimental results, it can be seen that the ultra-stable laser basically meets the engineering requirements of the ground-based time service, and it will lay a foundation for the research of the transportable ultra-stable laser in China.

关 键 词：超稳激光 光学参考腔 可搬运 频率稳定度 

分 类 号：TN24[电子电信—物理电子学]