Pulse compression of KrF laser radiation by stimulated scattering

摘要

Abstract: Waveform conjugation of narrowband KrF lasers with linewidth 0.02 cm$+$MIN@1$/ and divergence 10$+$MIN@4$/ rad was investigated. By means of Brillouin scattering in SF$-6$/ gas, the 12 ns duration pump pulse was compressed up to 1.5 ns with energy efficiency about 80% and the laser beam divergence retention. The waveform conjugation under thermal Raleigh scattering in hexane, heptane and hot water was also investigated. The maximum efficiency in hexane was about 10% and scattered pulse duration 2.5 ns. Waveform conjugation in a wide region of liquid absorption coefficients was also observed.!