200元同城服务-同城空降软件,花间堂约茶的网,附近300元3小时

The research team innovatively proposed and experimentally validated a nanosecond-scale pulse contrast measurement method based on laser filamentation in water. This technique utilizes nonlinear optical attenuation generated by the laser-matter interaction to effectively protect the photodiode, achieving up to 40-fold attenuation of the main pulse without affecting low-intensity prepulses.