Hsieh W F, Zheng J B, Chang R K
Opt Lett. 1988 Jun 1;13(6):497-9. doi: 10.1364/ol.13.000497.
An optical multichannel detection technique was used to measure simultaneously the time profiles of the input laser pulse and the elastic scattering, as well as the time profiles of the spectrally resolved multiorder stimulated Raman scattering (SRS), from single droplets. The time delay between the multiorder SRS and the input laser pulse is consistent with the generalized four-wave mixing process for first-order stimulated Raman growth, starting from spontaneous noise or the parametric signal. The presence of an internal plasma associated with laser-induced breakdown within a droplet quenches the SRS and increases the elastic scattering.
采用光学多通道检测技术，同时测量来自单个液滴的输入激光脉冲和弹性散射的时间分布，以及光谱分辨的多阶受激拉曼散射（SRS）的时间分布。多阶SRS与输入激光脉冲之间的时间延迟与一阶受激拉曼增长的广义四波混频过程一致，该过程从自发噪声或参量信号开始。与液滴内激光诱导击穿相关的内部等离子体的存在会淬灭SRS并增加弹性散射。
