Design study of efficient far-UVC second-harmonic generation using an integrated approach.

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

Abstract

This work presents an approach for continuous-wave laser emission in the far-UVC using second-harmonic generation in barium borate (BBO) thin-film waveguides. The crystal orientation is analytically considered for waveguides, and two designs with perfect modal phase matching (PhM) are simulated. The first design includes a BBO ridge-waveguide defined by dry etching. This allows for good confinement and spatial overlap of the relevant optical modes. The second design includes a strip-loaded waveguide, which aims at suppressing the side-wall scattering by confining the optical modes in the BBO thin-film. Showing that the conversion efficiency can be greatly enhanced.

Original languageEnglish
Title of host publicationNonlinear Optics and Applications XII
EditorsMario Bertolotti, Anatoly V. Zayats, Alexei M. Zheltikov
Volume11770
PublisherSPIE - International Society for Optical Engineering
Publication dateApr 2021
Article number117700P
ISBN (Electronic)9781510643741
DOIs
Publication statusPublished - Apr 2021
EventSPIE Optics + Optoelectronics - Online
Duration: 19 Apr 202130 Apr 2021

Conference

ConferenceSPIE Optics + Optoelectronics
LocationOnline
Period19/04/202130/04/2021

Keywords

  • Barium borate (BBO)
  • Far-UVC lasers
  • Nonlinear waveguides
  • Second-harmonic generation (SHG)

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