高灵敏度半导体激光吸收光谱技术  

High Sensitivity Diode Laser Absorption Spectroscopy

作　　者：黄炜婷[1] 郝群玉[1] 杨晓华[1] 郭迎春[1] 陈扬[1] 

机构地区：[1]华东师范大学光谱学与波谱学教育部重点实验室,上海200062

出　　处：《半导体光电》2006年第3期342-345,共4页Semiconductor Optoelectronics

基　　金：国家自然科学基金资助项目(10204007;10434060);上海市科委基础重大课题(04DZ14009)

摘　　要：以可调谐外腔半导体激光器为光源,结合光外差调制技术、浓度调制技术建立了一套高灵敏度半导体激光光谱测量系统,可用来开展对瞬态分子的高分辨光谱研究。还在实验和理论上研究了不同解调相位下信号的线型,给出了较好的解调相位。The semiconductor laser spectroscopic measurement system with high sensitivity is established by using the tunable extra-cavity diode laser as the source and by combining the optical heterodyne detection technique and concentration modulation technique for detecting the transient molecules. Based on this scheme, the line shapes of spectral signal under different demodulated phases are measured and analyzed. A proper demodulated phase is realized.

关 键 词：可调谐半导体激光器 光外差 浓度调制 高灵敏度探测 瞬态分子 线型 

分 类 号：O561.3[理学—原子与分子物理]