High Power Laser and Accelerator——Performence Provement of the High Power KrF Laser and Its Application

摘要

A beam smoothing experiment of one beam of the 6-beams high power KrF laser system at CIAE has been demonstrated using the technique of echelon-free induced spatial incoherence (EF-ISI). The focal profiles with 1.4% rms deviation from a fiat top distribution through the laser system capable of producing 30-40 J per pulse in 50 ns at a target were obtained and the 50 ns pulse has been compressed to 25 ns by keeping the same energy per pulse using an optical gain-saturation switch method.