Coriolis Effect in Optics: Unified Geometric Phase and Spin-Hall Effect

Details Coriolis Effect in Optics: Unified Geometric Phase and Spin-Hall Effect Coriolis Effect in Optics: Unified Geometric Phase and Spin-Hall Effect

2008-02-14

arxiv.org/abs/0802.2114v2

Phys.Rev.Lett.101:030404,2008

Physics

Optics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.101.030404

We examine the spin-orbit coupling effects that appear when a wave carrying intrinsic angular momentum interacts with a medium. The Berry phase is shown to be a manifestation of the Coriolis effect in a non-inertial reference frame attached to the wave. In the most general case, when both the direction of propagation and the state of the wave are varied, the phase is given by a simple expression that unifies the spin redirection Berry phase and the Pancharatnam--Berry phase. The theory is supported by the experiment demonstrating the spin-orbit coupling of electromagnetic waves via a surface plasmon nano-structure. The measurements verify the unified geometric phase, demonstrated by the observed polarization-dependent shift (spin-Hall effect) of the waves.

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