Goos-H\"anchen and Imbert-Fedorov Shifts for Epsilon-Near-Zero Materials

TL;DR

This paper studies how epsilon-near-zero materials affect beam reflection, revealing enhanced and tunable Goos-H"anchen and Imbert-Fedorov shifts due to the unique optical properties of ENZ media.

Contribution

It demonstrates that ENZ materials significantly enhance and allow tuning of beam shifts, providing new insights into light-matter interactions at these media.

Findings

Spatial shifts are significantly enhanced in ENZ media.

The shifts' magnitude and position can be tuned by adjusting the plasma frequency.

ENZ properties enable control over beam reflection phenomena.

Abstract

We investigate the reflection of a Gaussian beam impinging upon the surface of an epsilon-near-zero (ENZ) medium. In particular, we discuss the occurrence of Goos-H\"anchen and Imbert-Fedorov shifts. Our calculations reveal that spatial shifts are significantly enhanced owing to the ENZ nature of the medium, and that their value and angular position can be tuned by tuning the plasma frequency of the medium.