High-intensity light bullets at the competition of quadratic and cubic nonlinearities

Aleksei A. Kalinovich; Maria V. Komissarova; Sergey V. Sazonov; Irina G. Zakharova

doi:10.1117/12.2589285

18 April 2021 High-intensity light bullets at the competition of quadratic and cubic nonlinearities

Aleksei A. Kalinovich, Maria V. Komissarova, Sergey V. Sazonov, Irina G. Zakharova

Proceedings Volume 11770, Nonlinear Optics and Applications XII; 117700D (2021) https://doi.org/10.1117/12.2589285
Event: SPIE Optics + Optoelectronics, 2021, Online Only

Abstract

Our studies are focused on high intensity spatiotemporal parametric processes in a microdispersive non-centrosymmetric medium. We solve numerically the system of coupled parabolic equations for second harmonic generation that are supplemented with terms responsible for self- and cross- modulations. Joint influence of quadratic and cubic nonlinearities is studied for the case of anomalous dispersion at both frequencies. Recently it was demonstrated that provided small phase mismatches a stable two-color light bullet may be generated and then it propagates in a medium with pure quadratic nonlinearity. At the same time, pure Kerr nonlinearity is responsible for bullet instability. In our investigations we reveal a threshold condition of the two-color bullet stability in the medium with combined quadraticcubic nonlinearity.

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Citation Download Citation

Aleksei A. Kalinovich, Maria V. Komissarova, Sergey V. Sazonov, and Irina G. Zakharova "High-intensity light bullets at the competition of quadratic and cubic nonlinearities", Proc. SPIE 11770, Nonlinear Optics and Applications XII, 117700D (18 April 2021); https://doi.org/10.1117/12.2589285

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