长短脉冲间自同步的光探针

OPTICAL SOUNDING FOR LONG AND SHORT PULSE AUTOSYNCHRONIZATION

一、引言 在六路激光系统中,我们采用从主激光输出中分出一部分进行喇曼频率变换和脉冲压缩,获得了最短脉宽为25ps的630nm的光,用此喇曼光我们进行了等离子体的阴影、纹影、干涉和磁场的测量,得到了一系列有用的信息。我们将此喇曼光用BBO晶体倍频。

To study the dynamics of target ablation in experiments on laser-driven thermonuclear fusion using optical sounding, a laser system operated at nanosecond and picosecond durations and rigidly synchronized with each other is constructed. Single 10-20ps pulses at wavelength of 315nmhave been generated by compressing 5ns Nd:YAG laser pulse at wavelength of 1064nm using a system of Brillouin and Raman stimulate backward scattering.