Graphene-assisted resonant transmission and enhanced Goos-H\"{a}nchen shift in a frustrated total internal reflection configuration

TL;DR

This paper explores how graphene enhances resonant transmission and the Goos-H"{a}nchen} shift in a frustrated total internal reflection setup, revealing tunable optical effects for potential graphene-based electro-optic applications.

Contribution

It demonstrates that graphene can significantly improve resonant transmission and control the Goos-H"{a}nchen} shift in optical tunneling configurations, offering new avenues for device development.

Findings

Graphene induces surface plasmons leading to resonant transmission.

Chemical potential and electron relaxation time modulate the Goos-H"{a}nchen} shift.

Enhanced transmission with low loss compared to quantum well structures.

Abstract

Graphene-assisted resonant transmission and enhanced Goos-H\"{a}nchen shift are investigated in a two-prism frustrated-total-internal-reflection configuration. Due to the excitation of surface plasmons induced by graphene in low terahertz frequency range, there exist the resonant transmission and anomalous Goos-H\"{a}nchen shifts in such optical tunneling configuration. As compared to the case of quantum well, graphene sheet with unique optical properties can enhance the resonant transmission with relatively low loss, and modulate the large negative and positive Goos-H\"{a}nchen shifts by adjusting chemical potential or electron relaxation time. These intriguing phenomena may lead to some potential applications in graphene-based electro-optic devices.