Publication

Symmetry breaking of the χ<sup>(2)</sup> polarization in poled thin film lithium niobate waveguides enabling phase matching

Camille Sophie Brès
2024

Abstract

Poling the bottom of etched LNOI waveguides enables modal phase matching with an antisymmetric mode and a measured second harmonic generation efficiency of 1980 %W-1cm-2. The simple design allows for reproducible on-chip frequency conversion.

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Symmetry breaking of the χ<sup>(2)</sup> polarization in poled thin film lithium niobate waveguides enabling phase matching

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