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Persistent URL http://purl.org/net/epubs/work/53898
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Record Id 53898
Title Simulations of efficient Raman amplification into the multipetawatt regime
Abstract Contemporary high-power laser systems make use of solid-state laser technology to reach petawatt pulse powers. The breakdown threshold for optical components in these systems, however, demands metre-scale beams. Raman amplification of laser beams promises a breakthrough by the use of much smaller amplifying media, that is, millimetre-diameter plasmas, but so far only 60 GW peak powers have been obtained in the laboratory, far short of the desired multipetawatt regime. Here we show, through the first large-scale multidimensional particle-in-cell simulations of this process, that multipetawatt peak powers can be reached, but only in a narrow parameter window dictated by the growth of plasma instabilities. Raman amplification promises reduced cost and complexity of intense lasers, enabling much greater access to higher-intensity regimes for scientific and industrial applications. Furthermore, we show that this process scales to short wavelengths, enabling compression of X-ray free-electron laser pulses to attosecond duration.
Organisation CLF , SSTD , STFC
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Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article Nat Phys 7 (2010): 87-92. doi:10.1038/nphys1793 2010
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