Second-order nonlinear effects in InGaAsP waveguides for efficient wavelength conversion to the mid-infrared

Emil Z. Ulsig; Nicolas Volet

doi:10.1117/12.2581819

5 March 2021 Second-order nonlinear effects in InGaAsP waveguides for efficient wavelength conversion to the mid-infrared

Emil Z. Ulsig, Nicolas Volet

Author Affiliations +

Proceedings Volume 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX; 116700U (2021) https://doi.org/10.1117/12.2581819
Event: SPIE LASE, 2021, Online Only

Abstract

Simulations predict perfect phasematching for difference frequency generation (DFG) in a nonlinear ridge waveguide. It makes use of InGaAsP lattice-matched to InP as a nonlinear ridge waveguide. Both crystals possess high second-order susceptibility χ⁽²⁾ and low loss, making them ideal for second-order nonlinear effects. The design allows two lasers in the telecom spectrum to interact in the nonlinear waveguide and emit in the mid-infrared (mid-IR). The InGaAsP ridge waveguide heterogeneously integrated on silicon-rich silicon nitride achieves phase-matching, resulting in a conversion efficiency η = 4.5 %/W.

Conference Presentation

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Emil Z. Ulsig and Nicolas Volet "Second-order nonlinear effects in InGaAsP waveguides for efficient wavelength conversion to the mid-infrared", Proc. SPIE 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX, 116700U (5 March 2021); https://doi.org/10.1117/12.2581819

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