用于微小角度测量的宽调谐半导体激光器技术  

The Technology of Widely Tunable Semiconductor Lasers for Small Angle Measurement

作　　者：常鹏媛 钟浩然 黄欣荣 苗杰 葛哲屹 潘多 陈景标[2,3] CHANG Pengyuan;ZHONG Haoran;HUANG Xinrong;MIAO Jie;GE Zheyi;PAN Duo;CHEN Jingbiao(Institute of quantum information and technology,Nanjing University of Posts and Telecommunications,Nanjing 210003;Institute of Quantum Electronics,School of Electronics,Peking University,Beijing 100871;Hefei National Laboratory,Hefei 230088)

机构地区：[1]南京邮电大学通信与信息工程学院,量子信息技术研究所,南京210003 [2]北京大学电子学院,量子电子学研究所,北京100871 [3]合肥国家实验室,合肥230094

出　　处：《宇航计测技术》2025年第1期103-108,共6页Journal of Astronautic Metrology and Measurement

基　　金：江苏省自然科学基金(BK20240613);北京市科技新星计划(20240484696);江苏省“双创博士”项目(JSSCBS20230088);南京邮电大学引进人才自然科学研究启动基金(NY222112);南京邮电大学校级自然科学基金(NY224123)资助。

摘　　要：角度测量是物理学的核心任务,已经从几何方法发展成高精度技术,其在科学研究、精密制造和卫星定位等领域发挥着重要作用,但目前非干涉法、干涉法、电磁和惯性法等传统角度测量方法在分辨率上都面临着固有的限制。因此,提出了一种角度到频率的转换测量技术,利用窄带干涉滤光片外腔半导体激光器对干涉滤光片角度变化的高灵敏响应,通过将干涉滤光片与被测对象固定连接,角度的微小变化将转换为激光频率的变化。结合稳定的参考频率源,通过拍频技术精确检测输出激光频率的变化,实现对被测装置角度的超高精度测量。与传统角度测量方法相比,此技术通过将角度测量转换为频率测量,显著提高了小角度精度测量的能力,目标达到0.0001″量级的角度分辨率。Angle measurement,a core task in physics,has advanced from geometric methods to highly precise technologies.It plays a critical role in scientific research,precision manufacturing,and satellite positioning.However,traditional angle measurement methods,including non-interference methods,interference methods,electromagnetic,and inertial method,face inherent limitations in resolution.To address this limitation,an angle-to-frequency conversion measurement technique has been proposed.Leveraging the high sensitivity of narrow-band interference filter external cavity diode lasers(ECDLs)to angular changes of the interference filter,the filter is fixed to the measured object,converting small angular variations into changes in the laser frequency.By using a stable reference frequency source and employing beat frequency comparison,the frequency shifts of the output laser are precisely detected,enabling ultra-high-precision angular measurements of the device.Compared with traditional angle measurement methods,this approach transforms angular measurement into frequency measurement,significantly enhancing the capability for precision measurements of small angles,aiming to achieve an angular resolution on the order of 0.0001 arcseconds.

关 键 词：干涉滤光片 外腔半导体激光器 角度测量 时间频率测量 角分辨率 

分 类 号：V248.9[航空宇航科学与技术—飞行器设计] TH741[机械工程—光学工程]