Time delays and energy transport velocities in three dimensional ideal cloaking

Details Time delays and energy transport velocities in three dimensional ideal cloaking Time delays and energy transport velocities in three dimensional ideal cloaking

2007-12-24

arxiv.org/abs/0712.3985v3

J. Appl. Phys. 104, 033113 (2008)

Physics

Optics

A scaling factor is added to convert the parameter \tau into the physical time

Scientific paper

10.1063/1.2967815

We obtained the energy transport velocity distribution for a three dimensional ideal cloak explicitly. Near the operation frequency, the energy transport velocity has rather peculiar distribution. The velocity along a line joining the origin of the cloak is a constant, while the velocity approaches zero at the inner boundary of the cloak. A ray pointing right into the origin of the cloak will experience abrupt changes of velocities when it impinges on the inner surface of the cloak. This peculiar distribution causes infinite time delays for the ideal cloak within a geometric optics description.

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