@inproceedings{e69798d8c0624653a4555791396236d3,
title = "Second-order nonlinear effects in InGaAsP waveguides for efficient wavelength conversion to the mid-infrared",
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.",
keywords = "DFG, InGaAsP, InP, Integrated nonlinear photonics, Mid-IR, Second-order susceptibility, Spectroscopy",
author = "Ulsig, {Emil Z.} and Nicolas Volet",
note = "Publisher Copyright: {\textcopyright} 2021 SPIE.; Nonlinear Frequency Generation and Conversion: Materials and Devices XX 2021 ; Conference date: 06-03-2021 Through 12-03-2021",
year = "2021",
doi = "10.1117/12.2581819",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE - International Society for Optical Engineering",
editor = "Schunemann, {Peter G.} and Schepler, {Kenneth L.}",
booktitle = "Nonlinear Frequency Generation and Conversion",
address = "United States",
}