Phys. Rev. Lett. 90, 107402 (2003) [4 pages]Refraction in Media with a Negative Refractive IndexReceived 20 June 2002; published 13 March 2003 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. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.107402
DOI:
10.1103/PhysRevLett.90.107402
PACS:
78.20.Ci, 41.20.Jb, 42.25.–p, 42.30.–d
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.