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Negative refraction can make non-diffracting beams.

By A. Kaliteevski, S. Brand, R.A. Abram, A.J. Gallant and J.M. Chamberlain


We report the results of simulations relating to the illumination of a\ud structure consisting of a slab constructed from a 2-D hexagonal array\ud of metal rods with a terahertz frequency source. As a consequence of\ud negative refraction an essentially non-divergent beam pattern is\ud observed. Although the results presented relate to the terahertz regime\ud they should also be applicable at other frequencies. (C) 2008 Optical\ud Society of America

Topics: Physical optics, Electromagnetic optics, Photonic crystals.
Publisher: Optical Society of America
Year: 2008
DOI identifier: 10.1364/OE.16.014582
OAI identifier:

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