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arXiv · 1403.5973

Far detuned mid-infrared frequency conversion via normal dispersion modulation instability in chalcogenide microwire

Thomas Godin·Yves Combes·Raja Ahmad·Martin Rochette·Thibaut Sylvestre·John M. Dudley
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Abstract

We report the observation of modulation instability in the mid-infrared spectral region by pumping a hybrid polymer-chalcogenide optical microwire with a femtosecond optical parametric oscillator operating at 2.6 μm. It is further shown that this modulation instability occurs in the normal dispersion regime through negative fourth-order dispersion and leads to far detuned parametric frequency conversion at 2 μm and 3.5 μm, despite the presence of a strong absorption band around 2.8 μm. Stochastic nonlinear Schrödinger equation simulations of mid-infrared modulation instability are in excellent agreement with experiments.

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Thomas Godin, Yves Combes, Raja Ahmad, Martin Rochette, Thibaut Sylvestre, John M. Dudley. 2014-03-24. Far detuned mid-infrared frequency conversion via normal dispersion modulation instability in chalcogenide microwire. https://doi.org/10.1364/ol.39.001885

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