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VOLUME 46 (1987) | ISSUE 10 | PAGE 383
Stimulated-Raman-effect amplification of femtosecond light pulses in counterpropagating and copropagating pump beams
Experiments reveal a preservation of the frequency modulation of picosecond laser pulses during stimulated-Raman-efFect amplification in counterpropagating and copropagating pump beams. This fact is used as a basis for proposing a new method for amplifying femtosecond pulses. Gain values up to 41 dB have been achieved for 400-500-fs pulses (up to an energy on the order of a microjoule) at a repetition frequency of 1-30 kHz.