Fabrication and characterization of Transverse Orientation Patterned Gallium Phosphide waveguides for high efficiency second harmonic generation

Achieving high conversion efficiencies in second-order nonlinear optical processes is a key challenge in integrated photonics for both classical and quantum applications. This paper presents the first demonstration of Transverse Orientation-Patterned gallium phosphide (TOP-GaP) waveguides showing hi...

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Published in:arXiv.org 2024-12
Main Authors: Lemoine, Antoine, Brieg Le Corre, Morice, Lise, Harouri, Abdelmounaïm, Luc Le Gratiet, Beaudoin, Grégoire, Julie Le Pouliquen, Tavernier, Karine, Grisard, Arnaud, Combrié, Sylvain, Bruno, Gérard, Cornet, Charles, Dumeige, Yannick, Pantzas, Konstantinos, Sagnes, Isabelle, Léger, Yoan
Format: Article
Language:English
Subjects:
Gallium phosphides
Nonlinear optics
Phase matching
Second harmonic generation
Waveguides
Online Access:Get full text
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Summary:Achieving high conversion efficiencies in second-order nonlinear optical processes is a key challenge in integrated photonics for both classical and quantum applications. This paper presents the first demonstration of Transverse Orientation-Patterned gallium phosphide (TOP-GaP) waveguides showing high-efficiency second harmonic generation. In such devices, first order modal phase matching is unlocked and optimized through the inversion of the nonlinear susceptibility along the vertical direction. We discuss here the theory behind modal phase matching in TOP structures, describe the fabrication process, and present linear and nonlinear characterizations of the TOP-GaP waveguides.
ISSN:2331-8422