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Article Dans Une Revue Optics Express Année : 2015

Nonlinear optical response of low loss silicon germanium waveguides in the mid-infrared

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We have investigated the nonlinear optical response of low loss Si0.6Ge0.4 / Si waveguides in the mid-infrared wavelength range from 3.25-4.75 mu m using picosecond optical pulses. We observed and measured the three and four-photon absorption coefficients as well as the Kerr nonlinear refractive index. The dynamics of the spectral broadening suggests that, in addition to multiphoton absorption, the corresponding higher order nonlinear refractive phenomena also needs to be included when high optical pulse intensities are used at mid-infrared wavelengths in this material. (C) 2015 Optical Society of America
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hal-01489422 , version 1 (22-12-2023)

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Luca Carletti, P. Ma, Y. Yu, B. Luther-Davies, D. Hudson, et al.. Nonlinear optical response of low loss silicon germanium waveguides in the mid-infrared. Optics Express, 2015, 23 (7), pp.8261-8271. ⟨10.1364/OE.23.008261⟩. ⟨hal-01489422⟩
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