Highly efficient nonlinear filter for femtosecond pulse contrast enhancement and pulse shortening

Abstract : We propose a highly efficient scheme for temporal filters devoted to femtosecond pulse contrast enhancement. The filter is based on cross-polarized wave generation with a spatially suger-Gaussian-shaped beam. In a single nonlinear crystal scheme the energy conversion to the cross-polarized pulse can reach 28%. We demonstrate that the process enables a significant spectral broadening. For an efficiency of 23% the pulse shortening is estimated to 2.2, leading to an intensity transmission of the nonlinear filter of 50%.
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https://hal-polytechnique.archives-ouvertes.fr/hal-00528426
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Submitted on : Thursday, October 21, 2010 - 4:45:23 PM
Last modification on : Thursday, December 5, 2019 - 6:50:02 PM

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Aurélie Jullien, Jean-Philippe Rousseau, Brigitte Mercier, Laura Antonucci, Olivier Albert, et al.. Highly efficient nonlinear filter for femtosecond pulse contrast enhancement and pulse shortening. Optics Letters, Optical Society of America, 2008, 33 (20), pp.2353-2355. ⟨10.1364/OL.33.002353⟩. ⟨hal-00528426⟩

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