The ratio of quadratic and cubic nonlinearity of crystals in the THz range

I. R. Artser; M. S. Guselnikov; M. V. Melnik; A. N. Tcypkin; S. A. Kozlov

doi:10.1117/12.2641868

28 December 2022 The ratio of quadratic and cubic nonlinearity of crystals in the THz range

I. R. Artser, M. S. Guselnikov, M. V. Melnik, A. N. Tcypkin, S. A. Kozlov

Proceedings Volume 12310, Advanced Lasers, High-Power Lasers, and Applications XIII; 1231017 (2022) https://doi.org/10.1117/12.2641868
Event: SPIE/COS Photonics Asia, 2022, Online Only

Conference Poster

Abstract

It is known that in the optical range quadratic nonlinear effects in solids appear at relatively low radiation intensities, while the radiation intensity required for a significant manifestation of cubic effects is much higher and can reach the damage threshold values. In this regard, quadratic effects dominate over cubic ones. In this work, it is analytically demonstrated that in the terahertz range the intensities required for the manifestation of cubic effects are much lower than in the optical range. In addition, their contribution to nonlinear effects can exceed the quadratic one by several orders of magnitude.

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Citation Download Citation

I. R. Artser, M. S. Guselnikov, M. V. Melnik, A. N. Tcypkin, and S. A. Kozlov "The ratio of quadratic and cubic nonlinearity of crystals in the THz range", Proc. SPIE 12310, Advanced Lasers, High-Power Lasers, and Applications XIII, 1231017 (28 December 2022); https://doi.org/10.1117/12.2641868

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