Comment on "Direct space-time observation of pulse tunneling in an electromagnetic band gap"

TL;DR

This paper critiques a previous study on electromagnetic pulse tunneling, arguing that the original investigation's conclusions about the tunneling process are invalid.

Contribution

It provides a critical analysis challenging the validity of prior experimental claims on electromagnetic pulse tunneling.

Findings

The original study's interpretation of tunneling is flawed.

The critique questions the experimental evidence for direct space-time observation.

It emphasizes the need for careful analysis in tunneling experiments.

Abstract

The investigation presented by Doiron, Hache, and Winful [Phys. Rev. A 76, 023823 (2007)] is not valid for the tunneling process as claimed in the paper.