量子电子学报2025，Vol.42Issue(2)：196-205,10.DOI:10.3969/j.issn.1007-5461.2025.02.005
气压调谐的窄带滤波器研制及其在铁共振荧光激光雷达中的应用
Development of pressure-tuned narrowband filter and its application in iron resonance fluorescence lidar
摘要
Abstract
Iron resonance fluorescence lidar is an important means of measuring temperature and wind field in the region from the top of the intermediate layer to the bottom of the thermosphere.However,due to the presence of strong sky background noise during the daytime,the resonance fluorescence signals of iron atoms are submerged,making it impossible to detect temperature and wind field in the middle and upper atmosphere.In order to solve this problem,this paper developed a tunable narrowband filter and proposed a new filtering method of connecting two Fabry-Perot etalons with air gap in series and combining them with a narrowband interference filter.Then the filter and the method were applied in iron resonance fluorescence Doppler lidar,achieving temperature and wind field detection in the region from the top of the intermediate layer to the bottom of the thermosphere during daytime.Firstly,by defining a filter performance evaluation function,the filtering performance of the filter was quantitatively analyzed,and parameters such as bandwidth and free spectral range of the two etalons were determined.Furthermore,a control system based on PID algorithm was designed to achieve precise control of the pressure in etalon chamber.Then,the design specifications of the filter were tested through simulation.And finally,field experiments demonstrated the filtering effectiveness of the filter in the iron resonance fluorescence lidar system,achieving a signal-to-noise ratio exceeding 136 and enabling wind speed and temperature detection in the iron layer region.关键词
大气光学/窄带滤波器/法布里-珀罗标准具/铁共振荧光激光雷达Key words
atmospheric optics/narrowband filter/Fabry-Perot etalon/iron resonance fluorescence lidar分类
电子信息工程引用本文复制引用
李春伟,邓迁,李乘,吴德成,刘东,王珍珠..气压调谐的窄带滤波器研制及其在铁共振荧光激光雷达中的应用[J].量子电子学报,2025,42(2):196-205,10.基金项目
安徽省重点研究与开发计划项目(2022h11020008),中国科学院青年创新促进会人才项目(Y2021113),中国科学院合肥物质科学研究院院长基金项目(2021YZGH01) （2022h11020008）
