Spectral manipulation of Raman amplifiers
Backward Raman amplifiers provide a promising path to the next generation of short pulse high-intensity lasers that can go beyond the damage limit of conventional materials . The main idea is to couple a short seed and a long counter-propagating pump through an electron plasma wave in such a way that the pump energy is transferred to the seed that is amplified and compressed via Raman backscattering. In the talk, I will give a short introduction on the physics of Raman amplifiers and review three recent developments in the field: (a) mitigating the relativistic phase-mismatch and the resulting saturation by detuning of the pump pulse , (b) multi-frequency amplification of pulses with a beat-wave waveform , and (c) a new configuration for Raman amplifiers in which, the laser seed is replaced by a plasma wave seed .
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תאריך עדכון אחרון : 05/12/2022