Measurement of the Goos-Hänchen shift in a microwave cavity

Details Measurement of the Goos-Hänchen shift in a microwave cavity Measurement of the Goos-Hänchen shift in a microwave cavity

2010-10-25

arxiv.org/abs/1010.5102v1

Physics

Optics

10 pages, 5 figures

Scientific paper

We present measurements of the Goos-H\"anchen shift in a two-dimensional dielectric microwave cavity. Microwave beams are generated by a suitable superposition of the spherical waves generated by an array of antennas; the resulting beams are then reflected at a planar interface. By measuring the electric field including its phase, Poynting vectors of the incoming and reflected beams can be extracted, which in turn are used to find the incoming angle and the positions where the beam hits the interface and where it is reflected. These positions directly yield the Goos-H\"anchen shift. The results are compared to the classical Artmann result and a numerical calculation using Gaussian beams.

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