期刊
PHYSICAL REVIEW LETTERS
卷 84, 期 6, 页码 1208-1211出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.1208
关键词
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The recently proposed scheme of so-called fast compression of laser pulses in plasma can increase peal; laser intensities by 10(5) [Phys. Rev. Lett. 82, 4448 (1999)]. The compression mechanism is the transient stimulated Raman backscattering, which outruns the fastest filamentation instabilities of the pumped pulse even at highly overcritical powers. This Letter proposes a novel nonlinear filtering effect that suppresses premature backscattering of the pump in a noisy plasma layer, while the desired amplification of a sufficiently intense seed persists with a high efficiency. The effect is of basic interest and also makes it robust to noise the simplest technologically fast compression scheme.
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