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

Emil Z. Ulsig*, Nicolas Volet

*Corresponding author for this work

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

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.

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 date2021
Article number116700U
ISBN (Electronic)9781510641754
DOIs
Publication statusPublished - 2021
EventNonlinear Frequency Generation and Conversion: Materials and Devices XX 2021 - Virtual, Online, United States
Duration: 6 Mar 202112 Mar 2021

Conference

ConferenceNonlinear Frequency Generation and Conversion: Materials and Devices XX 2021
Country/TerritoryUnited States
CityVirtual, Online
Period06/03/202112/03/2021
SponsorThe Society of Photo-Optical Instrumentation Engineers (SPIE)
SeriesProceedings of SPIE - The International Society for Optical Engineering
Volume11670
ISSN0277-786X

Keywords

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

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