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

Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review


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.

Original languageEnglish
Title of host publicationNonlinear Frequency Generation and Conversion : Materials and Devices XX
EditorsPeter G. Schunemann, Kenneth L. Schepler
PublisherSPIE - International Society for Optical Engineering
Publication year2021
Article number116700U
ISBN (Electronic)9781510641754
Publication statusPublished - 2021
EventNonlinear Frequency Generation and Conversion: Materials and Devices XX 2021 - Virtual, Online, United States
Duration: 6 Mar 202112 Mar 2021


ConferenceNonlinear Frequency Generation and Conversion: Materials and Devices XX 2021
LandUnited States
ByVirtual, Online
SponsorThe Society of Photo-Optical Instrumentation Engineers (SPIE)
SeriesProceedings of SPIE - The International Society for Optical Engineering

Bibliographical note

Publisher Copyright:
© 2021 SPIE.

    Research areas

  • DFG, InGaAsP, InP, Integrated nonlinear photonics, Mid-IR, Second-order susceptibility, Spectroscopy

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ID: 221762009