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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 8 — Apr. 16, 2007
  • pp: 5114–5119

Spatial dispersion and energy in a strong chiral medium

Chao Zhang and Tie Jun Cui  »View Author Affiliations


Optics Express, Vol. 15, Issue 8, pp. 5114-5119 (2007)
http://dx.doi.org/10.1364/OE.15.005114


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Abstract

Since the discovery of backward-wave materials, people have tried to realize a strong chiral medium, which is traditionally thought impossible mainly for the reason of energy and spatial dispersion. We compare the two most popular descriptions of a chiral medium. After analyzing several possible reasons for the traditional restriction, we show that a strong chirality parameter leads to positive energy without any frequency-band limitation in the weak spatial dispersion. Moreover, strong chirality does not result in a strong spatial dispersion, which occurs only around the traditional limit point. For strong spatial dispersion where higher-order terms of spatial dispersion need to be considered, the energy conservation is also valid. Finally, we show that realization of strong chirality requires the conjugated type of spatial dispersion.

© 2007 Optical Society of America

OCIS Codes
(000.2690) General : General physics
(120.5710) Instrumentation, measurement, and metrology : Refraction
(160.1190) Materials : Anisotropic optical materials
(260.2110) Physical optics : Electromagnetic optics

ToC Category:
Physical Optics

History
Original Manuscript: December 20, 2006
Revised Manuscript: February 15, 2007
Manuscript Accepted: February 27, 2007
Published: April 12, 2007

Citation
Chao Zhang and Tie Jun Cui, "Spatial dispersion and energy in strong chiral medium," Opt. Express 15, 5114-5119 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-8-5114


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