Fermat's principle with complex refractive indices and local light-ray rotation

Details Fermat's principle with complex refractive indices and local light-ray rotation Fermat's principle with complex refractive indices and local light-ray rotation

2008-09-25

arxiv.org/abs/0809.4350v2

Opt. Lett. 34, 374-376 (2009)

Physics

Optics

3 pages, 2 figures

Scientific paper

10.1364/OL.34.000374

We describe local light-ray rotation in terms of complex refractive indices. We show that Fermat's principle holds, and we derive an extended Snell's law. The change in the angle of a light ray with respect to the normal to a refractive-index interface is described by the modulus of the refractive-index ratio, the rotation around the interface normal is described by the argument of the refractive-index ratio.

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