Observation of spontaneous Raman scattering in silicon slow-light photonic crystal waveguides

被引：39
|
作者：
McMillan, J. F. [1 ]
Yu, Mingbin [2 ]
Kwong, Dim-Lee [2 ]
Wong, C. W. [1 ]
机构：
[1] Columbia Univ, Opt Nanostruct Lab, New York, NY 10027 USA
[2] Inst Microelect, Singapore 117685, Singapore
来源：
APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 25期
基金：
美国国家科学基金会;
关键词：
integrated optics; membranes; optical waveguides; photonic crystals; Raman spectra; silicon;
D O I：
10.1063/1.3050457
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the observation of spontaneous Raman scattering in silicon photonic crystal waveguides. Continuous-wave measurements of both forward scattered and backscattered Stokes emissions are reported in single line-defect waveguides in hexagonal lattice photonic crystal silicon membranes. By utilizing the Bragg gap edge dispersion of the TM-like mode for pump enhancement and the TE-like fundamental mode onset for Stokes enhancement, the spontaneous Raman scattering coefficient was observed to increase by up to six times in the region of slow group velocity. The results show explicit nonlinear enhancement in a silicon photonic crystal slow-light waveguide device.
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