6 kHz线宽干涉滤光片型外腔半导体激光器  

Interference-Filter-Type External-Cavity Diode Laser with a Narrow Linewidth of 6 kHz

作　　者：杨钰炜 胡笛 叶美凤[2,3,4] 熊恒 龚浪浪 陶艾龙 方苏 汪凌珂 艾迪 李琳 许忻平[2,3] 徐震[2,3] 徐凭[5] 冯吉军[1] 刘亮 李唐[2,3,4] Yang Yuwei;Hu Di;Ye Meifeng;Xiong Heng;Gong Langlang;Tao Ailong;Fang Su;Wang Lingke;Ai Di;Li Lin;Xu Xinping;Xu Zhen;Xu Ping;Feng Jijun;Liu Liang;Li Tang(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Wangzhijiang Innovation Center for Laser,Aerospace Laser Technology and System Department,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Key Laboratory of Quantum Optics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Center for Excellence in Quantum Information and Quantum Physics,Chinese Academy of Sciences,University of Science and Technology of China,Shanghai 230026,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093 [2]中国科学院上海光学精密机械研究所空天激光技术与系统部王之江激光创新中心,上海201800 [3]中国科学院上海光学精密机械研究所量子光学重点实验室,上海201800 [4]中国科学院大学材料科学与光电子工程中心,北京100049 [5]中国科学技术大学中国科学院量子信息与量子科技创新研究院,上海230026

出　　处：《激光与光电子学进展》2024年第23期309-314,共6页Laser & Optoelectronics Progress

基　　金：国家重大基础研究发展计划(2021YFC2201803、2021YFC2201904);国家自然科学基金(12074367、11974337);中国博士后科学基金(2022M713257)。

摘　　要：提出一种用于星载锶光钟超稳激光光源的窄线宽1397 nm滤光片型外腔半导体激光器(IF-ECDL),采用一体化的激光器构型以及殷钢材料腔体,实现了对激光器运行过程中的温度波动及机械振动等技术噪声的有效抑制。测量与分析结果表明,该激光器的线宽约为6 kHz,接近由激光器电流源噪声决定的线宽极限,是目前报道的线宽最窄的分立元件型外腔半导体激光器。此外,该激光器输出功率大于60 mW,压电换能器连续频率调谐范围大于11 GHz,同时具有很高的功率与频率稳定性,除了星载光钟应用外,该激光器也将适用于精密测量、量子物理等其他窄线宽激光应用场景。This article describes a 1397 nm narrow-linewidth-filter-type external-cavity semiconductor laser(IF-ECDL)suitable for spaceborne strontium clock ultra-stable laser sources.Effective suppression of technical noise,such as mechanical vibration and temperature fluctuations during laser operation,has been achieved by designing an integrated laser configuration and using an invar-based external cavity.The linewidth of the proposed 1397 nm laser is measured as approximately 6 kHz,which is close to the linewidth limit determined by the current source noise of the laser.It is the narrowest linewidth of discrete-device-type ECDLs reported heretofore.In addition,the laser can output optical power higher than 60 mW and provide a mode-hop-free frequency tuning range of more than 11 GHz with only piezoelectric transducer(PZT)scanning.Furthermore,it has quite high power and frequency stability.In addition to satellite-borne optical clock applications,this laser is also expected to become an ideal light source for the fields of precision measurement,quantum physics,and other applications that require narrow-linewidth laser light sources.

关 键 词：激光光学 外腔二极管激光器 干涉滤光片 窄线宽 

分 类 号：TN242[电子电信—物理电子学]