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Communication Dans Un Congrès Année : 2023

Phase-matching free pulse retrieval based on plasma-induced defocusing

Résumé

A phase-matching free pulse retrieval technique based on plasma-induced defocusing in a rare gas is presented. Based on a pump-probe setup, this technique uses a moderately intense pump laser pulse for ionizing the medium, creating in turn an ultrafast defocusing lens. While a coronagraph blocks out the probe pulse in absence of ionization, the plasma lens leads to increase the probe beam size in the far field. By measuring the spectrum of the probe propagating around the coronagraph as a function of the pump-probe delay π, a bi-dimensional trace (ω,π) is obtained. This enables to fully characterize the temporal and spectral characteristics of the probe pulse through a method that is free of phase matching constraints. Demonstrated both in the near-infrared (800 nm) and in the ultraviolet (266 nm), the present technique is potentially suited for characterizing pulses in the whole transparency region of the used gas, i.e., from the deep-ultraviolet to the far-infrared.
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Dates et versions

hal-04279378 , version 1 (10-11-2023)

Identifiants

Citer

P. Béjot, Rishabh Bhalavi, Olivier Faucher, Franck Billard, Edouard Hertz. Phase-matching free pulse retrieval based on plasma-induced defocusing. European Optical Society Annual Meeting EOSAM 2023, Sep 2023, Dijon, France. pp.08011, ⟨10.1051/epjconf/202328708011⟩. ⟨hal-04279378⟩
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