Fermat’s principle with complex refractive indices and local light-ray rotation
نویسندگان
چکیده
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. c © 2009 Optical Society of America
منابع مشابه
Fermat's principle and the formal equivalence of local light-ray rotation and refraction at the interface between homogeneous media with a complex refractive index ratio.
We derive a formal description of 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 of a refractive index interface is described by the modulus of the refractive index ratio; the rotation around the interface normal is described by the ar...
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