High efficiency second harmonic generation in transverse orientation patterned gallium phosphide waveguides
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 what we believe is 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.
Authors
- Yannick Dumeige (ORCID: https://orcid.org/0000-0001-9003-0809)
- Yoan Léger (ORCID: https://orcid.org/0000-0003-0807-0049)
- Konstantinos Pantzas (ORCID: https://orcid.org/0000-0002-2297-3247)
- L. Le Gratiet
- Brieg Le Corre (ORCID: https://orcid.org/0000-0003-3312-9735)
- Christophe Levallois (ORCID: https://orcid.org/0000-0001-5832-0769)
- Charles Cornet (ORCID: https://orcid.org/0000-0002-1363-7401)
- Sylvain Combrié (ORCID: https://orcid.org/0000-0002-2063-2748)
- Abdelmounaïm Harouri (ORCID: https://orcid.org/0000-0003-1813-6347)
- Arnaud Grisard
- Bruno Gérard
- Karine Tavernier
- Lise Morice
- A Lemoine
- Julie Le Pouliquen
- Isabelle Sagnes
- G. Beaudoin (ORCID: https://orcid.org/0000-0001-8283-2609)
Institutions
- Thales (Australia) (AU)
- Centre de Nanosciences et de Nanotechnologies (FR)
- III V Lab (FR)
Publication Details
- Journal
- Optics Express
- Published
- 2025-04-03
- DOI
- https://doi.org/10.1364/oe.557556
- Citations
- 2
- Primary Topic
- Advanced Fiber Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 2.49