title: Nonreciprocal nonlinear wave scattering by loss-compensated active hyperbolic structures.
abstract: The combinatorial frequency generation (CFG) in active periodic semiconductor-dielectric structures has been explored through illumination by a pair of pump waves with dissimilar frequencies and incidence angles. We study the influence of gain on linear refraction properties of the stack and on the efficiency of the mixing processes by the system with the resistive character of nonlinearity. We demonstrate that the introduction of gain dielectric material inside the stack not only compensates for losses caused by the collisions of the electrons in semiconductor media but also improves the efficiency of the CFG. We show that in systems with weak asymmetry of linear response we can get significant nonreciprocity of nonlinear interaction.
authors.affiliation: Crete Center for Quantum Complexity and Nanotechnology, Department of Physics, University of Crete P.O. Box 2208, 71003 Heraklion, Greece.
authors.forename: O V
authors.initials: OV
authors.lastname: Shramkova
authors.affiliation: Crete Center for Quantum Complexity and Nanotechnology, Department of Physics, University of Crete P.O. Box 2208, 71003 Heraklion, Greece.|Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, P.O. Box 1527, 71110 Heraklion, Greece.|National University of Science and Technology MISiS, Leninsky prosp. 4, Moscow, 119049, Russia.
authors.forename: G P
authors.initials: GP
authors.lastname: Tsironis