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Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 66: Photonik 4

Q 66.6: Vortrag

Freitag, 16. März 2012, 15:15–15:30, V38.01

Direct measurement of the geometric Spin Hall Effect of Light using a polarizer — •Jan Korger1,2, Vanessa Chille1,2, Andrea Aiello1,2, Peter Banzer1,2, Christoffer Wittmann1,2, Norbert Lindlein2, Christoph Marquardt1,2, and Gerd Leuchs1,21Max Planck Institute for the Science of Light, Guenther-Scharowsky-Str. 1, 91058 Erlangen, Germany — 2Institute for Optics, Information and Photonics, University Erlangen-Nuremberg, Staudtstr. 7/B2, 91058 Erlangen, Germany

The geometric Spin Hall Effect of Light (gSHEL) [1] amounts to a positional shift occurring when a circularly polarized beam of light is projected onto a plane not perpendicular to the direction of propagation. Recently, it was shown that a suitable projection can be realized using a polarizing interface [2]. We present a setup designed to verify this variant of the gSHEL.

A light beam is prepared using a Michelson-like interferometer that allows a periodic modulation of the state of polarization. While continuously monitoring the polarization, we observe the intensity barycenter of the light beam transmitted across our tilted polarizer using a split detector. As a result of the projection occurring at the polarizer, this position shifts if the polarization of the incident beam is switched from left-handed to right-handed circular.

We present our latest experimental results and show for the first time a direct measurement of the geometric Spin Hall Effect of Light.

[1] A. Aiello, et. al., Phys Rev Lett 103, 100401 (2009) [2] J. Korger, et. al., Appl Phys B, 102, 427–432 (2011)

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