Optical bistability in aperiodic multilayer composed of graphene and Thue-Morse lattices

A theoretical study in the optical bistability of the transmitted light in complex multilayers is provided. The proposal structure is composed of graphene and one-dimensional Thue-Morse dielectric lattices. Low thresholds optical bistability is achieved owning to the enhancement of graphene nonlinearity with a strong electric field localization. Simulations show that the thresholds of optical bistability and the intervals between the upper and lower thresholds can be flexibly modulated by the chemical potential of graphene, incident wavelengths and incident angles. The complex structure provides a candidate for the all-optical switches.

Automated summary

The theoretical study explores optical bistability of transmitted light in complex multilayers composed of graphene and Thue-Morse dielectric lattices. Low threshold optical bistability is achieved due to the enhancement of graphene nonlinearity with strong electric field localization. Simulations demonstrate that thresholds and intervals between them can be flexibly modulated by graphene's chemical potential, incident wavelengths, and angles, offering a candidate for all-optical switches.