Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10071/6930
Autoria: | Trines, R. M. G. M. Fiuza, F. Bingham, R. Fonseca, R. A. Silva, L. O. Cairns, R. A. Norreys, P. A. |
Data: | 2011 |
Título próprio: | Simulations of efficient Raman amplification into the multipetawatt regime |
Volume: | 7 |
Número: | 1 |
Paginação: | 87-92 |
ISSN: | 1745-2473 |
Resumo: | 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. |
Arbitragem científica: | Sim |
Acesso: | Acesso Embargado |
Aparece nas coleções: | CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Nat Phys 2011 Trines.pdf Restricted Access | 1,39 MB | Adobe PDF | Ver/Abrir Request a copy |
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