期刊
OPTICS EXPRESS
卷 27, 期 4, 页码 4990-5004出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.27.004990
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资金
- Natural Science and Engineering Research Council of Canada (NSERC)
- Alberta Innovates, Canada Research Chairs program
Optical emission from silicon is most practically accessible through nonlinear optical wave mixing, due to the indirect bandgap of the material. Although silicon is a material that absorbs visible light, third-harmonic generation driven by infrared signals can be used to generate visible light in silicon structures. In this work, we present a comprehensive investigation into thirdharmonic generation in silicon-on-insulator waveguides. We demonstrate that few-micrometer length waveguides can be used to up-convert ultrafast 1550nm laser pulses to their third-harmonic with efficiencies up to eta(TH)(G) = 2.8 x 10(-5), the highest third-harmonic generation conversion efficiency reported to date in a silicon-based structure. Nonlinear propagation through 200 mu m long waveguides produces self-compressing temporal solitons, which dramatically broaden and blue shift the observed third-harmonic spectrum. Such devices are envisioned to provide a method for generating coherent visible signals within an integrated, CMOS compatible platform. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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