Observation of Goos-Hänchen shifts in metallic reflection

Details Observation of Goos-Hänchen shifts in metallic reflection Observation of Goos-Hänchen shifts in metallic reflection

2007-09-14

arxiv.org/abs/0709.2278v2

Physics

Optics

The parer was published on Optics Express. The new version is modified according to the reviewers suggestions

Scientific paper

10.1364/OE.15.015928

We report the first observation of the Goos-H$\rm \ddot{\textbf{a}}$nchen shift of a light beam incident on a metal surface. This phenomenon is particularly interesting because the Goos-H$\rm \ddot{\textbf{a}}$nchen shift for $p$ polarized light in metals is negative and much bigger than the positive shift for $s$ polarized light. The experimental result for the measured shifts as a function of the angle of incidence is in excellent agreement with theoretical predictions. In an energy-flux interpretation, our measurement shows the existence of a backward energy flow at the bare metal surface when this is excited by a $p$ polarized beam of light.

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