Abstract

The basic regularities of compression of laser pulses by backward stimulated scattering including stimulated Brillouin scattering (SBS) are already known quite well. The ratio of compression in single SBS-compressor’s generated Stokes pulse does not exceed the threshold of SBS increment. Therefore for the first time in order to get experimentally shorter pulses with greater compression we realised the cascade compression by using pump pulses with duration ~12 ns and Stokes pulses with duration smaller than measuring equipment resolution (200 ps) were obtained [1]. If pump pulses have duration of ~ (5-6) ns the duration of SBS - compressed pulses equals usually ≈ 0.3 ns. To obtain shorter pulses in a single SBS-compressor shorter pump pulses have to be used. However even using pulses of duration < 2 ns the compressed pulses are usually longer than 100 ps [2].

© 2000 IEEE