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Updated: Jan 24, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
Published on: January 3, 2016
PT-symmetric periodic structures with the modulation of the Kerr nonlinearity
M V Komissarova1, V F Marchenko1, P Yu Shestakov1
1Lomonosov Moscow State University, Faculty of Physics, GSP-1, 1-2 Leninskiye Gory, Moscow 119991, Russia.
Abstract:
We study the PT-symmetric periodic layered structure with the modulated Kerr nonlinearity. We demonstrate that such systems can be transformed from the full to the broken PT symmetry or in the opposite direction. These transitions in the periodic structure with a finite length may be observed indirectly with the help of the dependence of the transmitted wave intensity on the incident wave intensity. Furthermore, the bistability properties depend on a gain and loss value and the choice of an input surface. The reduction of a feedback between counterpropagating waves is the main impact of the complex PT-symmetric refractive index variation on a bistability curve.
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