Scattered light diagnostic of over-dense plasma cavity at ultra intense laser pulse interaction with solid target

摘要

The light scattered backward from a target illuminated by ultra intense laser pulses carries important information about the nonlinear laser plasma interaction. We analyze the possibility of using this information with the help of developed analytical model and PIC simulations. The spectrum of scattered light is shown to be shifted, to be broadened and to be modulated, in comparison with the initial laser spectrum.