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

Appl. Phys. Lett. 93, 251105 (2008); doi:10.1063/1.3050457

Published 23 December 2008

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J. F. McMillan,1 Mingbin Yu,2 Dim-Lee Kwong,2 and C. W. Wong1
1Optical Nanostructures Laboratory, Columbia University, New York, New York 10027, USA
2Institute of Microelectronics, 11 Science Park Road, Singapore 117685, Singapore
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. ©2008 American Institute of Physics
History: Received 23 July 2008; accepted 18 November 2008; published 23 December 2008
Permalink: http://link.aip.org/link/?APPLAB/93/251105/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.82.-m
    Integrated optics
  • 42.82.Et
    Optical waveguides, couplers, and arrays (integrated optics)
  • 42.70.Qs
    Photonic bandgap materials
  • 78.30.-j
    Infrared and Raman spectra (condensed matter)
  • YEAR: 2008

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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