声光可调滤波器双晶体二次滤波的性能分析（英文）  

Double-Filtering Performance of Acousto-Optic Tunable Filter with Two Crystals

作　　者：黄峻峰[1] 王号(指导)[1] 张春光[1] 高强[1] 

机构地区：[1]福建师范大学光电与信息工程学院医学光电科学与技术教育部重点实验室,福建省光子技术重点实验室,福建福州350007

出　　处：《激光与光电子学进展》2015年第9期280-284,共5页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61107092);福建师范大学青年骨干教师资助计划(fjsdjk2012055)

摘　　要：非共线声光可调滤波器（AOTF）是一种利用反常声光作用原理制成的新型分光器件，其衍射信号的光谱分辨率和旁瓣是评价AOTF性能的两个重要指标。阐述了通过两个AOTF进行二次滤波的基本原理。实验证实了二次滤波法可使AOTF衍射信号的光谱分辨率提高40．4％～3．2％和旁瓣抑制9．5570dB到13．2407dB。研究结果表明用两个AOTF进行二次滤波在声光滤波领域有着巨大的应用前景。The noncollinear acousto-optic tunable filter （AOTF） is a new type of spectral component that is developed according to the abnormal acousto-optic interaction principle. The spectral resolution and sidelobe of diffraction signal arc two important indices for evaluating the performance of AOTF. The basic principle of double- filtering using two AOTFs is described. The experimental results confirm that the double-filtering achieves a 40.4% to 83.2% improvement in the spectral resolution and from 9.5570 dB to 13.2407 dB suppression of the sidelobes. The results of this exploratory study demonstrate that double-filtering using two AOTFs has great potential for application in the field of the acousto-optic filtering.

关 键 词：光学器件 声光可调滤波器 光谱分辨率 旁瓣 二次滤波 

分 类 号：O439[机械工程—光学工程]