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Mid-infrared ultra-short pulse generation in a gas filled hollow-core fiber pumped by two pulses

Abstract : We show that ultra-short pulses can be generated in the mid-infrared when a gas filled hollow-core fiber is pumped by a fundamental pulse and its second harmonic. The generation process originates from cascaded nonlinear phenomenon starting from a spectral broadening of the two pulses followed by an induced phase-matched four wave-mixing lying in the mid-infrared combined with a dispersive wave. By selecting this mid-infrared band with a spectral filter, we demonstrate the generation of ultra-short 60 fs pulses at 3-4 µm band and a pulse duration of 20 fs can be reached with additional phase compensator.
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https://hal.archives-ouvertes.fr/hal-03194763
Contributor : Damien Bigourd <>
Submitted on : Friday, April 9, 2021 - 5:30:33 PM
Last modification on : Saturday, April 10, 2021 - 3:31:03 AM

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Coralie Fourcade-Dutin, Olivia Miranda, Patrick Mounaix, Damien Bigourd. Mid-infrared ultra-short pulse generation in a gas filled hollow-core fiber pumped by two pulses. Fibers, MDPI, 2021, 9 (4), pp.21. ⟨10.3390/fib9040021⟩. ⟨hal-03194763⟩

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