Experimental studies of the internal Goos-Hanchen shift for self-collimated beams in two-dimensional microwave photonic crystals

TL;DR

This paper experimentally investigates the internal Goos-Hanchen shift in self-collimated microwave photonic crystal beams and demonstrates control of the beam reflection via surface engineering, supported by numerical simulations.

Contribution

It introduces a method to control the Goos-Hanchen shift in photonic crystals through surface modifications, validated by experiments and simulations.

Findings

Control of the beam reflection position via surface engineering.

Good agreement between experimental data and numerical simulations.

Demonstration of the internal Goos-Hanchen shift in microwave photonic crystals.

Abstract

We study experimentally the Goos-Hanchen effect observed at the reflection of a self-collimated beam from the surface of a two-dimensional photonic crystal and describe a method for controlling the beam reflection through surface engineering. The microwave photonic crystal, fabricated from alumina rods, allows control of the output position of a reflected beam undergoing an internal Goos-Hanchen shift by changing the rod diameter at the reflection surface. The experimental data is in good agreement with the results of the finite-difference time-domain numerical calculations.