旋转光栅调制傅里叶变换频谱仪  

Fourier Transform Spectrometer Modulated by Rotary Grating

作　　者：林德教[1] 平井亚纪子 松本弘一 曾理江[1] 殷纯永[1] LIN De-jiao;HIRAI Akiko;MATSUMOTO Hirokazu;ZENG Li-jiang;YIN Chun-yong(State Key Laboratory of Precision Measurement Technology&Instruments,Department of Precision Instruments,Tsinghua University,Beijing 100084,China;National Institute of Advanced Industrial Science and Zechnology,1—1—1 Umezono,Tsuhuba,1baraki 305-8563,Japan)

机构地区：[1]清华大学精密仪器与机械学系精密测量技术与仪器国家重点实验室,北京100084 [2]日本国家产业技术综合研究所计量研究部门,茨城县筑波3058563

出　　处：《中国激光》2003年第5期409-412,共4页Chinese Journal of Lasers

基　　金：中日国际合作研究项目;日本中小企业支援型研究开发基金资助

摘　　要：提出了一种基于圆盘旋转光栅调制的傅里叶变换光谱仪(FTS),光栅同时实现了分束和外差调制的功能。分析了三种实现分光的方案,通过对三个波长分别为670nm,633nm和532nm的激光进行了频谱测量实验,结果表明该光谱仪具有良好的稳定性和抗干扰能力,经调制后测量灵敏度倍增20倍,尤其适用于微弱信号测量和近红外领域。Fourier transform spectrometer(FTS)modulated by means of rotary grating is developed.The grating simultaneously acts as a beam splitter and a heterodyne modulator.Three schemes to separate the light beams are analyzed.Three lasers with the wavelength of 670 nm.633 nm and 532 nm respectively have been adopted to implement the measurement of spectrum.Experimental results show that this FTS takes advantage of favorable stability and strong ability of anti-disturbance.The sensitivity of measurement has been improved by 20 times with the modulation method.It is expected to be effective particularly in the domain of weak signal measurement and near infrared region.

关 键 词：光电子学 傅里叶变换光谱仪 旋转光栅 外差调制 

分 类 号：TH744.1[机械工程—光学工程]