Propagation of Bessel beams from a dielectric to a conducting medium

TL;DR

This paper analyzes how Bessel beams propagate from dielectric to conducting media, revealing that their shape remains unchanged even in conducting environments, which is promising for ground penetrating radar applications.

Contribution

It provides the first analysis of Bessel beam propagation across dielectric-conducting interfaces, showing shape preservation in conducting media.

Findings

Bessel beams maintain their shape in conducting media.

Normal incidence results in unchanged Bessel beam profiles.

Implications for improved ground penetrating radar systems.

Abstract

Recently, the use of Bessel beams in evaluating the possibility of using them for a new generation of GPR (ground penetrating radar) systems has been considered. Therefore, an analysis of the propagation of Bessel beam in conducting media is worthwhile. We present here an analysis of this type. Specifically, for normal incidence we analyze the propagation of a Bessel beam coming from a perfect dielectric and impinging on a conducting medium, i.e. the propagation of a Bessel beam generated by refracted inhomogeneous waves. The remarkable and unexpected result is that the incident Bessel beam does not change its shape even when propagating in the conducting medium.