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Proceedings Paper

Temporal intensity contrast ratio enhancement of petawatt level laser pulses based on second harmonic generation
Author(s): Sergey Mironov; Vladimir Lozhkarev; Vladislav Ginzburg; Ivan Yakovlev; Grigory Luchinin; Efim Khazanov; Alexander Sergeev; Gerard Mourou
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Paper Abstract

Theoretical investigation of second harmonic generation (SHG) of super intense femtosecond radiation demonstrated that temporal Intensity Contrast Ratio (ICR) of output radiation of petawatt level laser complexes can be significantly increased. The cubic polarization effects in the process give possibility of additional pulse compression. We present experimental results of SHG of radiation with average intensity 2TW/cm2 in 0.6mm KDP crystal. Theoretical model of linear regime of plane wave instability in mediums with quadratic and cubic nonlinearity is developed and thoroughly discussed. Analysis of small-scale self-focusing suppression methodic is presented. The influence of surface dust to spatial noises generation in SHG process is pointed out.

Paper Details

Date Published: 17 May 2010
PDF: 12 pages
Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 77211R (17 May 2010); doi: 10.1117/12.854156
Show Author Affiliations
Sergey Mironov, Institute of Applied Physics (Russian Federation)
Vladimir Lozhkarev, Institute of Applied Physics (Russian Federation)
Vladislav Ginzburg, Institute of Applied Physics (Russian Federation)
Ivan Yakovlev, Institute of Applied Physics (Russian Federation)
Grigory Luchinin, Institute of Applied Physics (Russian Federation)
Efim Khazanov, Institute of Applied Physics (Russian Federation)
Alexander Sergeev, Institute of Applied Physics (Russian Federation)
Gerard Mourou, LOA, Ecole Nationale Supérieure de Techniques Avancées (France)


Published in SPIE Proceedings Vol. 7721:
Solid State Lasers and Amplifiers IV, and High-Power Lasers
Thomas Graf; Gerhard G. Paulus; Jacob I. Mackenzie; Vincent Bagnoud; Catherine Le Blanc; Helena Jelinková, Editor(s)

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