In this paper, we present, for the first time, clear evidence of reaching the nonlinear regime of Raman Backscattering (RBS) amplification with pulse intensity amplification exciting 1000 in 2 mm long plasma and exciting pump intensity by more than order of magnitude. We have demonstrated energy amplification of up to /spl sim/5000 for a seed with a low input energy (<0.2 pJ) and up to /spl sim/60 for a seed with high input energy (7.5 pJ). The output energy grew exponentially when the input was low and the gain indicated "saturation" when the input was high.
Reaching nonlinear regime in Raman amplification of ultrashort laser pulses
2005 Quantum Electronics and Laser Science Conference ; 1 ; 35-37 Vol. 1
2005-01-01
1803975 byte
Conference paper
Electronic Resource
English
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