Sum-frequency generation in silicon nitride through coherent photogalvanic effect

Ozan Yakar; Edgars Nitiss; Jianqi Hu; Camille-Sophie Brès

doi:10.1117/12.2647672

14 March 2023 Sum-frequency generation in silicon nitride through coherent photogalvanic effect

Ozan Yakar, Edgars Nitiss, Jianqi Hu, Camille-Sophie Brès

Author Affiliations +

Proceedings Volume 12405, Nonlinear Frequency Generation and Conversion: Materials and Devices XXII; 124050B (2023) https://doi.org/10.1117/12.2647672
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

We demonstrate that the all-optical inscription of second-order nonlinearity through the coherent photogalvanic effect allows not only degenerate but also non-degenerate sum-frequency generation in silicon nitride waveguides. Several multiphoton absorption processes can occur simultaneously, such that their quantum interference allows for the inscription of distinct charge gratings for quasi-phase matching of several second-order nonlinear processes within the same waveguide. In this work, we investigate the effect theoretically and experimentally validate the generalized sum-frequency generation.

Conference Presentation

Citation Download Citation

Ozan Yakar, Edgars Nitiss, Jianqi Hu, and Camille-Sophie Brès "Sum-frequency generation in silicon nitride through coherent photogalvanic effect", Proc. SPIE 12405, Nonlinear Frequency Generation and Conversion: Materials and Devices XXII, 124050B (14 March 2023); https://doi.org/10.1117/12.2647672

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