Multi-octave mid-infrared supercontinuum generation in tapered chalcogenide-glass rods

We report on the experimental development of short-tapered chalcogenide-glass rods for mid-infrared supercontinuum generation. Multi-octave spectral broadening of femtosecond laser pulses is demonstrated from 1.6 to 15.6 µm in a 5-cm-long tapered Ge20Se70Te10 rod with a waist diameter of 25 µm. Desp...

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Published in:Optics letters 2023-11, Vol.48 (21), p.5479-5482
Main Authors: Serrano, Esteban, Bailleul, Damien, Désévédavy, Frédéric, Gadret, Grégory, Mathey, Pierre, Béjot, Pierre, Nakatani, Asuka, Cheng, Tonglei, Ohishi, Yasutake, Kibler, Bertrand, Smektala, Frédéric
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Language:English
Subjects:
Chalcogenides
Femtosecond pulsed lasers
Femtosecond pulses
Optical waveguides
Optics
Physics
Rods
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container_end_page 5482
container_issue 21
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container_title Optics letters
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creator Serrano, Esteban
Bailleul, Damien
Désévédavy, Frédéric
Gadret, Grégory
Mathey, Pierre
Béjot, Pierre
Nakatani, Asuka
Cheng, Tonglei
Ohishi, Yasutake
Kibler, Bertrand
Smektala, Frédéric
description We report on the experimental development of short-tapered chalcogenide-glass rods for mid-infrared supercontinuum generation. Multi-octave spectral broadening of femtosecond laser pulses is demonstrated from 1.6 to 15.6 µm in a 5-cm-long tapered Ge20Se70Te10 rod with a waist diameter of 25 µm. Despite the multimode nature of the optical waveguide used, this work clearly shows the potential of such simple post-processed rods for advancing fiber SC sources with infrared glasses, thereby unlocking new possibilities in terms of coupling efficiency, spectral coverage, and output power.
doi_str_mv 10.1364/OL.501036
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subjects Chalcogenides
Femtosecond pulsed lasers
Femtosecond pulses
Optical waveguides
Optics
Physics
Rods
title Multi-octave mid-infrared supercontinuum generation in tapered chalcogenide-glass rods
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