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

被引：45

作者：

Carletti, L. ^{[1
]}

Ma, P. ^{[2
]}

Yu, Y. ^{[2
]}

Luther-Davies, B. ^{[2
]}

Hudson, D. ^{[3
]}

Monat, C. ^{[1
]}

Orobtchouk, R. ^{[1
]}

Madden, S. ^{[2
]}

Moss, D. J. ^{[4
]}

Brun, M. ^{[5
]}

Ortiz, S. ^{[5
]}

Labeye, P. ^{[5
]}

Nicoletti, S. ^{[5
]}

Grillet, C. ^{[1
]}

机构：

[1] Univ Lyon, Inst Nanotechnol Lyon, Ecole Cent Lyon, F-69134 Ecully, France

[2] Australian Natl Univ, Laser Phys Ctr, CUDOS, Canberra, ACT 0100, Australia

[3] Univ Sydney, Sch Phys, CUDOS, Sydney, NSW 2006, Australia

[4] RMIT Univ, Sch Elect & Comp Engn, Melbourne, Vic 3001, Australia

[5] CEA Leti MINATEC Campus, F-38054 Grenoble, France

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 07期

基金：

澳大利亚研究理事会;

关键词：

SELF-PHASE MODULATION; 3RD-HARMONIC GENERATION; ABSORPTION; WAVELENGTHS; PHOTONICS;

D O I：

10.1364/OE.23.008261

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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

引用

页码：8261 / 8271

页数：11

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