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Proceedings Article

Temporal intensity contrast ratio enhancement of petawatt level laser pulses based on second harmonic generation

[+] Author Affiliations
Sergey Mironov, Vladimir Lozhkarev, Vladislav Ginzburg, Ivan Yakovlev, Grigory Luchinin, Efim Khazanov, Alexander Sergeev

Institute of Applied Physics (Russian Federation)

Gerard Mourou

LOA, Ecole Nationale Supérieure de Techniques Avancées (France)

Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 77211R (May 18, 2010); doi:10.1117/12.854156
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From Conference Volume 7721

  • Solid State Lasers and Amplifiers IV, and High-Power Lasers
  • Thomas Graf; Jacob I. Mackenzie; Helena Jelinková; Gerhard G. Paulus; Vincent Bagnoud; Catherine Le Blanc
  • Brussels, Belgium | April 12, 2010

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.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Sergey Mironov ; Vladimir Lozhkarev ; Vladislav Ginzburg ; Ivan Yakovlev ; Grigory Luchinin, et al.
"Temporal intensity contrast ratio enhancement of petawatt level laser pulses based on second harmonic generation", Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 77211R (May 18, 2010); doi:10.1117/12.854156; http://dx.doi.org/10.1117/12.854156


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