Spectral-temporal composition matters when cascading supercontinua into the mid-infrared

Optics Express
Christian Rosenberg PetersenOle Bang

Abstract

Supercontinuum generation in chalcogenide fibers is a promising technology for broadband spatially coherent sources in the mid-infrared, but it suffers from discouraging commercial prospects, mainly due to a lack of suitable pump lasers. Here, a promising approach is experimentally demonstrated using an amplified 1.55 μm diode laser to generate a pump continuum up to 4.4 μm in cascaded silica and fluoride fibers. We present experimental evidence and numerical simulations confirming that the spectral-temporal composition of the pump continuum is critical for continued broadening in a chalcogenide fiber. The fundamental physical question is concerned with the long-wavelength components of the pump spectrum, which may consist of either solitons or dispersive waves. In demonstrating this we present a commercially viable fiber-cascading configuration to generate a mid-infrared supercontinuum up to 7 μm in commercial chalcogenide fibers.

References

Sep 23, 2003·Science·D V SkryabinP St J Russell
Aug 25, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·F BiancalanaA V Yulin
May 23, 2006·Cancer Letters·Michael J WalshFrancis L Martin
Jul 5, 2011·Optics Letters·Christian AggerOle Bang
Mar 16, 2012·Optics Express·Sune DupontSøren Rud Keiding
Dec 10, 2014·Optics Letters·Francis ThébergeFrançois Légaré

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Citations

May 5, 2018·Applied Optics·Harshul BalaniAshish Kumar Ghunawat
Apr 16, 2016·Optics Letters·Jean-Christophe GauthierMartin Bernier
Jun 8, 2018·Optics Express·Francis ThébergeRéal Vallée
Sep 13, 2019·Optics Express·Khalil Eslami JahromiFrans J M Harren

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