Specially, the thermal lens effect is intensified due to the long tail attached to pulse, which leads to decreasing of conversion efficiency if pulserepetitionrate is enhanced.
特别由于脉冲附带长的拖尾加剧了热透镜效应，使得脉冲重复频率的增加引起转换效率的降低。
2
Then, transform it through the pulse sharpening circuit consisting mainly of capacitances and magnetic switches, finally outputting the high voltage and high repetitionrate nanosecond pulses.
In the atmosphere, on propagation of High-Intensity lasers of high pulserepetitionrate and narrow pulsewidth, the SRS will be serious because of molecular memory effects.