Observations of Spontaneous Raman Scattering in Silicon Slow-light Photonic Crystal Waveguides

Details Observations of Spontaneous Raman Scattering in Silicon Slow-light Photonic Crystal Waveguides Observations of Spontaneous Raman Scattering in Silicon Slow-light Photonic Crystal Waveguides

2008-07-22

arxiv.org/abs/0807.3388v1

Physics

Optics

12 pages, 4 figures

Scientific paper

10.1063/1.3050457

We report the observations of spontaneous Raman scattering in silicon photonic crystal waveguides. Continuous-wave measurements of Stokes emission for both wavelength and power dependence is 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 Stokes emission was observed to increase by up to five 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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