【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,每一光纤之间的长度差为1~2 m(相对延时为5~10 ns),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5 ns。更多还原

【Abstract】 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.更多还原