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Article Dans Une Revue Optics Communications Année : 2022

Spectral phase reconstruction of femtosecond laser pulse from interferometric autocorrelation and evolutionary algorithm

Résumé

We report on the complete temporal characterization of femtosecond laser pulses from second-order interferometric autocorrelation and laser spectrum measurements. The method exploits a newly developed autocorrelator based on a two photon-absorption signal produced directly within a camera sensor so as to provide a single-shot interferometric autocorrelation of great reliability and robustness. Interferometric autocorrelation trace and laser spectrum are exploited for a spectral phase retrieval via an evolutionary algorithm. The quality of the reconstruction for highly modulated spectral phases imprinted by a pulse shaper confirms the reliability of the method. The autocorrelator is compact, robust and easy to use. Possible improvements are discussed.
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hal-03442914 , version 1 (23-11-2021)

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J. Moreau, F. Billard, P. Béjot, E. Hertz. Spectral phase reconstruction of femtosecond laser pulse from interferometric autocorrelation and evolutionary algorithm. Optics Communications, 2022, 509, pp.127887. ⟨10.1016/j.optcom.2021.127887⟩. ⟨hal-03442914⟩
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