Refraction in Media with a Negative Refractive Index

S. Foteinopoulou, E. N. Economou, and C. M. Soukoulis
Phys. Rev. Lett. 90, 107402 – Published 13 March 2003

Abstract

We show that an electromagnetic (EM) wave undergoes negative refraction at the interface between a positive and negative refractive index material, the latter being a properly chosen photonic crystal. 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, reorganizes, and, after a long time, the wave front moves eventually in the negative direction. This particular example shows how 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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  • Received 20 June 2002

DOI:https://doi.org/10.1103/PhysRevLett.90.107402

©2003 American Physical Society

Authors & Affiliations

S. Foteinopoulou1, E. N. Economou2, and C. M. Soukoulis1,2,*

  • 1Ames Laboratory-USDOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011
  • 2Research Center of Crete, FORTH, Heraklion, Crete, Greece

  • *Author to whom correspondence should be addressed. Electronic address: soukoulis@ameslab.gov

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Issue

Vol. 90, Iss. 10 — 14 March 2003

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