Waveform control technique of high power laser pulse shaping

In order to achieve three-step pulse shaping (time proportion 1.5 ns∶1.0 ns∶0.5 ns, power proportion 1∶4∶16, total energy 500 J) required by the physical experiments on Shenguang-Ⅲ technical integration experimental line(TIL), some researches on waveform control of high power laser pulse shaping have been done on the basis of TIL system structure and the technology which can form arbitrary pulse waveform. By analyzing gain saturation effect and frequency conversion process, the paper gets the pulse change in transmission, amplification and frequency conversion processes, and builds a simple prediction model. Good experimental results are obtained by pulse waveform predicting, pulse shaping and repeated iteration of laser emission data, and used in the physical experiments. A prelimina