光纤延迟多道分析测量脉冲激光激发时间分辨光谱  

Measurement of Time-Dependent Spectra Excited by Pulse Laser Using Multi-Fiber Delayer and Optical Multi-Channel Analyzer

作　　者：程娟[1] 贺应红[1] 左浩毅[1] 杨经国[1] 

机构地区：[1]四川大学物理系

出　　处：《光谱学与光谱分析》2006年第4期593-596,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金(60078020;60478044);国防科技重点实验室基金(00JS75.3.1.JW1906)资助项目

摘　　要：报道应用多通道光纤延时耦合结合二维CCD阵列探测，实现瞬态脉冲激光激发光谱时间分辨测量的方法和技术。多光纤延时耦合器由五条不同长度的石英光纤组成，每一光纤之问的长度差为1～2m（相对延时为5～10ns），光学多道分析器为OMA-4。使用上述方法和装置实现了脉冲激光激发R6G染料激光光谱、脉冲激光激发丙酮（Acetone）的受激拉曼散射光谱以及脉冲激光激发金属样品所产生的等离子体光谱的时间分辨多道测量，时间分辨率达到5ns。A new method and technology for measuring time-dependent spectra excited by pulse laser was reported in the present paper, in which a multi-fiber delayer combined with a two dimensional CCD array detector was employed for collecting and processing the spectra. The multi-fiber delayer consists of five fibers with a length difference of 1-2 m （relative delay time 5-10 ns）, and the optical multi channel analyzer is PARC OMA-4. The time-dependent spectra, i. e. the spectra of R6G dye laser, the SRS spectra of acetone, and the plasma emission spectra of metal Mo excited by a double frequency YAG pulse laser with a time resolution of 5 ns were obtained.

关 键 词：激光光谱 时间分辨光谱 光纤延时 光学多道分析 

分 类 号：O433.1[机械工程—光学工程]