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

TY - GEN

T1 - Design study of efficient far-UVC second-harmonic generation using an integrated approach.

AU - Ulsig, Emil Zanchetta

AU - Volet, Nicolas

PY - 2021/4

Y1 - 2021/4

N2 - 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.

AB - 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.

KW - Barium borate (BBO)

KW - Far-UVC lasers

KW - Nonlinear waveguides

KW - Second-harmonic generation (SHG)

UR - http://www.scopus.com/inward/record.url?scp=85109216646&partnerID=8YFLogxK

U2 - 10.1117/12.2592408

DO - 10.1117/12.2592408

M3 - Article in proceedings

VL - 11770

BT - Nonlinear Optics and Applications XII

A2 - Bertolotti, Mario

A2 - V. Zayats, Anatoly

A2 - M. Zheltikov, Alexei

PB - SPIE - International Society for Optical Engineering

T2 - SPIE Optics + Optoelectronics

Y2 - 19 April 2021 through 30 April 2021

ER -