Experimental evidence of 25-fs laser pulse distortion in singlet beam expanders

Thomas A. Planchon 1 Serge Ferré 1 Guy Hamoniaux 1 Gilles Cheriaux 1 Jean-Paul Chambaret 1
1 LOA - Laboratoire d'optique appliquée
Abstract : We report the measurement of spatiotemporal distortions of an ultrashort pulse in singlet beam expanders. With a simple second-order autocorrelator the temporal broadening of the pulse from 23 to 40 fs, due to propagation time difference (PTD), is determined. The delay due to PTD between different parts of the beam is also measured. This effect was theoretically studied for the first time by Bor [J. Mod. Opt. 35, 1907 (1988)]. These experimental results are in good agreement with the calculations of a dedicated three-dimensional ray-tracing program developed to simulate the spatial and temporal transformation of femtosecond pulses in optical systems.
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Submitted on : Thursday, October 14, 2010 - 4:17:23 PM
Last modification on : Wednesday, July 3, 2019 - 10:48:02 AM

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Thomas A. Planchon, Serge Ferré, Guy Hamoniaux, Gilles Cheriaux, Jean-Paul Chambaret. Experimental evidence of 25-fs laser pulse distortion in singlet beam expanders. Optics Letters, Optical Society of America, 2004, 29 (19), pp.2300. ⟨10.1364/OL.29.002300⟩. ⟨hal-00526483⟩

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