Combining χ(2) and χ(3) nonlinear processes in the 4H-SiC-on-insulator platform

Yi Zheng; Ailun Yi; Yujun Cheng; Gaoyuan Li; Kresten Yvind; Xin Ou; Minhao Pu

doi:10.1117/12.3008602

9 March 2024 Combining χ⁽²⁾ and Χ⁽³⁾ nonlinear processes in the 4H-SiC-on-insulator platform

Yi Zheng, Ailun Yi, Yujun Cheng, Gaoyuan Li, Kresten Yvind, Xin Ou, Minhao Pu

Proceedings Volume PC12890, Smart Photonic and Optoelectronic Integrated Circuits 2024; PC1289007 (2024) https://doi.org/10.1117/12.3008602
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

SiC has emerged as a highly promising material for harnessing nonlinear processes, attributed to its inherent χ(2) and χ(3) nonlinearities. The recent introduction of SiC-on-insulator nanowaveguides with high-index contrast has enabled efficient dispersion engineering and strong light-matter nonlinear interaction. This advancement has consequently led to various nonlinear phenomena, including the generation of Kerr combs, supercontinuum, and second harmonic signals. Notably, none of the existing demonstrations have combined χ(2) and χ(3) nonlinear processes within a single device. In this study, we present a dispersion-engineered 4H-SiC-on-insulator nanowaveguide, which not only allows for the generation of octave-spanning supercontinuum through dispersive wave generation but also enables efficient frequency doubling of this dispersive wave. Our demonstration shows that the 4H-SiC-on-insulator is a versatile integrated platform for compact, multifunctional nonlinear devices.

Conference Presentation

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Yi Zheng, Ailun Yi, Yujun Cheng, Gaoyuan Li, Kresten Yvind, Xin Ou, and Minhao Pu "Combining χ⁽²⁾ and Χ⁽³⁾ nonlinear processes in the 4H-SiC-on-insulator platform", Proc. SPIE PC12890, Smart Photonic and Optoelectronic Integrated Circuits 2024, PC1289007 (9 March 2024); https://doi.org/10.1117/12.3008602

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KEYWORDS

Nonlinear dynamics

Second harmonic generation

Supercontinuum generation

Engineering

Light emitting diodes

Nonlinear optics

Second-harmonic generation

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