Refraction at Media with Negative Refractive Index

Details Refraction at Media with Negative Refractive Index Refraction at Media with Negative Refractive Index

2002-10-16

arxiv.org/abs/cond-mat/0210346v1

Phys. Rev. Lett. 90, 107402 (2003).

Physics

Condensed Matter

5 pages, 4 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.90.107402

We show that an electromagnetic (EM) wave undergoes negative refraction at the interface between a positive and negative refractive index material. Finite difference time domain (FDTD) simulations are used to study the time evolution of an EM wave as it hits the interface. The wave is trapped temporarily at the interface and after a long time, the wave front moves eventually in the negative direction. This explains why causality and speed of light are not violated in spite of the negative refraction always present in a negative index material.

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