Self-similar light beams at the second harmonic generation in a PT-symmetry structure with strong Bragg coupling at both frequencies

Tatiana M. Lysak; Irina G. Zakharova; Aleksei A. Kalinovich; Dmitrii A. Chaikovskii

doi:10.1117/12.2686020

26 November 2023 Self-similar light beams at the second harmonic generation in a PT-symmetry structure with strong Bragg coupling at both frequencies

Tatiana M. Lysak, Irina G. Zakharova, Aleksei A. Kalinovich, Dmitrii A. Chaikovskii

Author Affiliations +

Proceedings Volume 12775, Quantum and Nonlinear Optics X; 1277513 (2023) https://doi.org/10.1117/12.2686020
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

Light propagation in media with absorption and amplification of optical radiation is in the focus of numerous studies. In such active periodic structures with quadratic nonlinearity, under certain conditions, the formation of two-color solitons is possible. Recently, based on four coupled nonlinear Schrödinger equations, we numerically investigated the impact of the incident beam width on reflection/propagation properties of active periodic structures under strong Bragg coupling at the fundamental frequency and the weak one at the doubled frequency. We demonstrated the solitons trapping only for wide beams. In the present report, we focus on Bragg coupling at doubled frequency. We study the reflection properties of active PT-symmetry periodic structures with quadratic nonlinearity and the formation of trapped soliton in such structures, taking into account the strong Bragg coupling at both the fundamental and the second harmonics.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tatiana M. Lysak, Irina G. Zakharova, Aleksei A. Kalinovich, and Dmitrii A. Chaikovskii "Self-similar light beams at the second harmonic generation in a PT-symmetry structure with strong Bragg coupling at both frequencies", Proc. SPIE 12775, Quantum and Nonlinear Optics X, 1277513 (26 November 2023); https://doi.org/10.1117/12.2686020

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