Theoretical investigation of the nonreciprocal bistable absorption of electromagnetic waves in one-dimensional photonic crystals combined with the nonlinear magnetized plasma defect layer

Abstract

In this paper, we investigate the nonreciprocity bistable absorption of a one-dimensional photonic crystals combined with a novel nonlinear magnetized plasma defect layer. It is figured out that the structure has apparent nonreciprocity, bistable positive and negative absorption of the forward and backward incidences under the nonlinear magneto-optical effect. In addition, the tuning effects of the external magnetic fields and angles are studied. The consequences indicate that the two have significantly opposite working modulation effects on the bistable working range and absorptance. Specifically, the external magnetic field leads to individually controlling the bistability switch-down threshold, and the angle can affect the switch-up and switch-down thresholds concurrently. In the simulation of the electric field diagrams of the proposed structure, the incident side is larger than the transmitted to verify these negative absorption properties. The external magnetic fields and angles will form an alternating conversion between positive and negative absorption with different transmitted intensities. Considering the significance of theoretical experimental verification, concise and feasible experimental schemes are given. This work provides a constructive proposal for the design of magnetization modulated isolators for the nonlinear magnetized plasma materials.