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Article Dans Une Revue Opt. Express Année : 2015

Mid-infrared nonlinear optical response of Si-Ge waveguides with ultra-short optical pulses

Milan Sinobad
P. Ma
  • Fonction : Auteur
Regis Orobtchouk
Mathieu Brun
  • Fonction : Auteur
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Sergio S. Ortiz
  • Fonction : Auteur
J. Hartmann
  • Fonction : Auteur
S. Nicoletti
  • Fonction : Auteur
S. Madden
D. Moss
  • Fonction : Auteur
Christelle Monat
Christian Grillet

Résumé

We characterize the nonlinear optical response of low loss Si0.6Ge0.4 / Si waveguides in the mid-infrared between 3.3 mu m and 4 mu m using femtosecond optical pulses. We estimate the three and four-photon absorption coefficients as well as the Kerr nonlinear refractive index from the experimental measurements. The effect of multiphoton absorption on the optical nonlinear Kerr response is evaluated and the nonlinear figure of merit estimated providing some guidelines for designing nonlinear optical devices in the mid-IR. Finally, we compare the impact of free-carrier absorption at mid-infrared wavelengths versus near-infrared wavelengths for these ultra-short pulses. (C) 2015 Optical Society of America

Dates et versions

hal-01489441 , version 1 (14-03-2017)

Identifiants

Citer

Luca Carletti, Milan Sinobad, P. Ma, Y. Yu, David Allioux, et al.. Mid-infrared nonlinear optical response of Si-Ge waveguides with ultra-short optical pulses. Opt. Express, 2015, 23 (25), pp.32202-32214. ⟨10.1364/OE.23.032202⟩. ⟨hal-01489441⟩
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