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Proceedings Paper

2-10 µm mid-infrared supercontinuum generation in cascaded optical fibers: experiment and modelling
Author(s): Sébastien Venck; François St-Hilaire; Laurent Brilland; Amar N. Ghosh; Radwan Chahal; Céline Caillaud; Marcello Meneghetti; Johann Troles; Franck Joulain; Solenn Cozic; Samuel Poulain; Guillaume Huss; Martin Rochette; John Dudley; Thibaut Sylvestre
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Paper Abstract

Supercontinuum (SC) generation towards the mid-infrared (MIR) range is an active field of research and development motivated by a wide range of applications including optical coherence tomography (OCT), material processing, optical sensing and absorption spectroscopy. In this work, we investigate mid-IR SC generation in a cascaded silica and soft-glass fiber system directly pumped with a commercially-available picosecond fiber laser operating in the telecommunications window at 1.55 μm. This all-fiber system is shown to generate a flat broadband mid-IR-SC covering the entire range from 2 to 10 μm with several tens of mW of output power. This technique paves the way for practical and robust broadband SC sources in the mid-IR without the requirement of mid-infrared pump sources or Thulium-doped fiber amplifiers. We also describe a fully-realistic numerical model used to simulate the nonlinear pulse propagation through the cascaded fiber system and use our numerical results to discuss the physical processes underlying the spectral broadening in the cascaded system.

Paper Details

Date Published: 2 March 2020
PDF: 10 pages
Proc. SPIE 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX, 1126409 (2 March 2020); doi: 10.1117/12.2543753
Show Author Affiliations
Sébastien Venck, SelenOptics (France)
François St-Hilaire, FEMTO-ST, CNRS, Univ. Bourgogne Franche-Comté (France)
McGill Univ. (Canada)
Laurent Brilland, SelenOptics (France)
Amar N. Ghosh, FEMTO-ST, CNRS, Univ. Bourgogne Franche-Comté (France)
Radwan Chahal, SelenOptics (France)
Céline Caillaud, SelenOptics (France)
Marcello Meneghetti, Univ. de Rennes, CNRS (France)
Johann Troles, Univ. de Rennes, CNRS (France)
Franck Joulain, Le Verre Fluoré (France)
Solenn Cozic, Le Verre Fluoré (France)
Samuel Poulain, Le Verre Fluoré (France)
Guillaume Huss, LEUKOS (France)
Martin Rochette, McGill Univ. (Canada)
John Dudley, FEMTO-ST, CNRS, Univ. Bourgogne Franche-Comté (France)
Thibaut Sylvestre, FEMTO-ST, CNRS, Univ. Bourgogne Franche-Comté (France)

Published in SPIE Proceedings Vol. 11264:
Nonlinear Frequency Generation and Conversion: Materials and Devices XIX
Peter G. Schunemann; Kenneth L. Schepler, Editor(s)

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