Physics – Optics
Scientific paper
2009-03-11
J. Opt. A: Pure Appl. Opt. 11, 094009 (2009)
Physics
Optics
25 pages, 4 figures, review to appear in special issue of J. Opt. A: Pure Appl. Opt
Scientific paper
10.1088/1464-4258/11/9/094009
We review the geometrical-optics evolution of an electromagnetic wave propagating along a curved ray trajectory in a gradient-index dielectric medium. A Coriolis-type term appears in Maxwell equations under transition to the rotating coordinate system accompanying the ray. This term describes the spin-orbit coupling of light which consists of (i) the Berry phase responsible for a trajectory-dependent polarization variations and (ii) the spin Hall effect representing polarization-dependent trajectory perturbations. These mutual phenomena are described within universal geometrical structures underlying the problem and are explained by the dynamics of the intrinsic angular momentum carried by the wave. Such close geometro-dynamical interrelations illuminate a dual physical nature of the phenomena.
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