太赫兹源发散角测量技术研究  

Research on divergence angle measurement technique of terahertz sources

作　　者：俞兵[1] 王宝龙 李宏光[1] 解琪[1] 马世帮[1] YU Bing;WANG Baolong;LI Hongguang;XIE Qi;MA Shibang(Xi’an Institute of Applied Optics,Xi’an 710065,China;National Defense Intellectual Property Office,Beijing 100088,China)

机构地区：[1]西安应用光学研究所,陕西西安710065 [2]国防知识产权局,北京100088

出　　处：《应用光学》2021年第3期499-503,共5页Journal of Applied Optics

基　　金：国防科工局技术基础项目。

摘　　要：发散角是太赫兹源光束特性的重要衡量指标,是太赫兹光学系统设计的重要参数。研究了太赫兹源发散角测量原理,设计了一种由精密弧形导轨、斩波器、狭缝组件、太赫兹高莱探测器、锁相放大器和计算机系统组成的测量装置,设计了一种由自准直仪、光学角规和CCD相机组成的发散角测量装置标定模块,对太赫兹肖特基倍频源和太赫兹雪崩固态源的发散角进行了测量。此外,对测量结果不确定度进行了评定,其不确定度水平达到Urel=3.2%(k=2)。太赫兹源发散角的准确测量为深空探测、战术通信、反隐身、战场隐蔽目标识别等领域提供了有力的支撑。The divergence angle is an important measurement index of the beam characteristics of terahertz sources and an important parameter in the design of terahertz optical system.The measurement principle of terahertz source divergence angle was studied,the measuring device was designed,which was composed of precise arc guide rail,chopper,narrow slit components,terahertz Golay detector,lock-in amplifier and computer system.And the calibration module of divergence angle measuring device was also designed,which included auto-collimator,optical angle gauges and CCD camera.And then,the divergence angle of terahertz Schottky frequency doubling source and the terahertz avalanche solid state source were measured.In addition,the uncertainty of measurement results was evaluated,and the uncertainty level reaches to Urel=3.2%(k=2).The accurate measurement of terahertz source divergence angle provides strong support for deep space detection,tactical communication,anti-stealth,battlefield concealed target recognition and so on.

关 键 词：太赫兹源 发散角 测量 标定模块 

分 类 号：TN206[电子电信—物理电子学]