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Nd:YAG laser pulse compression by three-stage stimulated Brillouin and Raman scatterings

The experimental study of 8 ns pulse compression in a three- stage scheme has been carried out. The initial pulses of a Nd:YAG master oscillator were first compressed by two stages of stimulated Brillouin scattering (SBS) in CCl4, and then by a stage of stimulated Raman scattering (SRS) in compressed CH4. That enabled us to obtain output picosecond pulses with a wavelength of 1.54 micrometers . The necessary conditions for producing of the shortest Stokes pulse by the SBS-stage were determined. SRS-stage characteristics were studied in detail.