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Efficient second harmonic generation from mid-infrared to near-infrared regions in silicon-organic hybrid plasmonic waveguides with small fabrication-error sensitivity and a large bandwidth

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Abstract

We theoretically investigate the quadratic nonlinear property of a silicon-organic hybrid plasmonic waveguide with a thin polymer layer deposited on top of a silicon slab and covered by a metal cap. Due to the hybridization property of the waveguide modes, efficient phase-matched second harmonic generation (SHG) from mid-infrared (IR) (3.1μm) to near-IR (1.55μm) wavelengths are achieved with a small fabrication-error sensitivity (225nmtolerated waveguide width378nm) and a large bandwidth (Δλ=100nm). The SHG yield is as large as 8.8% for a pumping power of 100 mW.

© 2013 Optical Society of America

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