Numéro
J. Phys. IV France
Volume 135, October 2006
Page(s) 139 - 140
DOI http://dx.doi.org/10.1051/jp4:2006135030
Publié en ligne 23 novembre 2006
Neuvième colloque sur les lasers et l'optique quantique
C. Chardonnet et G. Millot
J. Phys. IV France 135 (2006) 139-140

DOI: 10.1051/jp4:2006135030

Temporal contrast enhanced to 10-10 for femtosecond lasers by nonlinear filtering

A. Jullien1, 2, O. Albert1, J. Etchepare1, G. Chériaux1, N. Minkovski3 and S.M. Saltiel3

1  Laboratoire d' Optique Appliquée, École Nationale Supérieure de Techniques Avancées, École Polytechnique, Centre National de la Recherche Scientifique UMR 7639, 91761 Palaiseau Cedex, France
2  Thales Laser, Domaine de Corbeville, 91400 Orsay, France
3  Faculty of Physics, University Sofia, 1164 Sofia, Bulgaria


(Published online 23 November 2006)

Abstract
We present a new third-order non-linear solid-state cleaner for temporal femtosecond pulses. This filter is based on cross-polarized wave generation in non-linear crystals. The contrast reaches 10-10 for millijoule input pulse. The method is reliable enough to solve the contrast issue for Petawatt class lasers.



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