基于偏振调节的太赫兹量子级联激光器双光梳研究  

Study of dual-comb terahertz quantum cascade lasers based on polarization modulation

作　　者：杨思嘉 李子平 廖小瑜 王晨捷 黎华[1,2] 曹俊诚 YANG Si-Jia;LI Zi-Ping;LIAO Xiao-Yu;WANG Chen-Jie;LI Hua;CAO Jun-Cheng(Key Laboratory of Terahertz Solid State Technology,Shanghai Institute of Microsystem and Information Technology,Shanghai 200050,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100083,China)

机构地区：[1]中国科学院上海微系统与信息技术研究所太赫兹固态技术实验室,上海200050 [2]中国科学院大学光电子学材料研究中心,北京100083

出　　处：《红外与毫米波学报》2022年第5期825-830,共6页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金(61927813)。

摘　　要：太赫兹量子级联激光器(THzQCL)双光梳在光谱检测、测距、成像等领域具有重要应用。双光梳信号严重依赖THz耦合光功率。利用THzQCL激射光为线偏振光的特性,在双光梳光路上插入线偏振片,通过旋转偏振片以达到对THz光强进行调节的作用。系统研究了THzQCL双光梳谱和功率与偏振角度的依赖关系,为实现高稳定THz双光梳光源与应用奠定基础。Dual-comb realized by terahertz quantum cascade lasers(THz QCL)has important applications in spectral detection,distance measurement and imaging.The dual-comb signal is heavily dependent on the THz coupling optical power.The THz QCL light is linearly polarized,and a linear polarizer is inserted into the optical path of the dual-comb.The polarizer is rotated to achieve the effect of adjusting the THz light intensity.The dependence of the THz QCL dual comb spectrum and power on the polarization angle is systematically investigated and it lays the foundation for the real-ization of a highly stable THz dual-comb light source and application.

关 键 词：太赫兹 量子级联激光器 双光梳 偏振 

分 类 号：O43[机械工程—光学工程]