AOTF红外光谱测量系统及其设计分析  

AOTF-based Infrared Spectra Measuring System and Design Analysis

作　　者：孙振东[1] 段乔峰[1] 李小霞[1] 赵玉春[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072

出　　处：《压电与声光》2004年第2期149-151,共3页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(69977015)

摘　　要：介绍了一种以声光可调谐滤光器(AOTF)为色散元件的新型红外光谱测量系统。系统采用计算机控制下的直接数字频率合成(DDS)技术,实现电调谐波长扫描。采用双光束相关检测技术,改善了系统的信噪比。文中对红外光谱测量系统的有关设计问题进行了论述。The novel infrared spectra measuring system using AOTF(Acousto-Optic Tunable Filter) as dispersive element is presented. Using DDS(Direct Digital Synthesizer)technique under control of single-chip computer, electronic-tunable wavelength scanning is realized. Signal-noise ratio of the system is improved with double beam mode and correlative detection technology. In this paper, some design problems about the AOTF-based infrared spectra measuring system are analyzed

关 键 词：声光可调谐滤光器(AOTF) 红外光谱测量系统 设计分析 

分 类 号：TN65[电子电信—电路与系统] TH744.1[机械工程—光学工程]