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Théberge F, Thiré N, Daigle JF, et al. Multioctave infrared supercontinuum generation in large-core As₂S₃ fibers. Opt Lett. 2014;39(22):6474-7doi: 10.1364/OL.39.006474.
Théberge, F., Thiré, N., Daigle, J. F., Mathieu, P., Schmidt, B. E., Messaddeq, Y., Vallée, R., & Légaré, F. (2014). Multioctave infrared supercontinuum generation in large-core As₂S₃ fibers. Optics letters, 39(22), 6474-7. https://doi.org/10.1364/OL.39.006474
Théberge, Francis, et al. "Multioctave infrared supercontinuum generation in large-core As₂S₃ fibers." Optics letters vol. 39,22 (2014): 6474-7. doi: https://doi.org/10.1364/OL.39.006474
Théberge F, Thiré N, Daigle JF, Mathieu P, Schmidt BE, Messaddeq Y, Vallée R, Légaré F. Multioctave infrared supercontinuum generation in large-core As₂S₃ fibers. Opt Lett. 2014 Nov 15;39(22):6474-7. doi: 10.1364/OL.39.006474. PMID: 25490497.
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Opt Lett. 2014 Nov 15;39(22):6474-7. doi: 10.1364/OL.39.006474.

Multioctave infrared supercontinuum generation in large-core As₂S₃ fibers.

Optics letters

Francis Théberge, Nicolas Thiré, Jean-François Daigle, Pierre Mathieu, Bruno E Schmidt, Younès Messaddeq, Réal Vallée, François Légaré

PMID: 25490497 DOI: 10.1364/OL.39.006474

Abstract

We report on infrared supercontinuum (SC) generation through laser filamentation and subsequent nonlinear propagation in a step-index As2S3 fiber. The 100 μm core and high-purity As2S3 fiber used exhibit zero-dispersion wavelength around 4.5 μm, a mid-infrared background loss of 0.2  dB/m, and a maximum loss of only 0.55  dB/m at the S-H absorption peak around 4.05 μm. When pumping with ultrashort laser pulses slightly above the S-H absorption band, broadband infrared supercontinua were generated with a 20 dB spectral flatness spanning from 1.5 up to 7 μm. The efficiency and spectral shape of the SC produced by ultrashort pulses in large-core As2S3 fiber are mainly determined by its dispersion, the S-H contaminant absorption, and the mid-infrared nonlinear absorption.

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