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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 29, Iss. 7 — Jul. 1, 2012
  • pp: 1436–1444

Goos–Hänchen shift of the reflected wave through an anisotropic metamaterial containing metal/dielectric nanocomposites

Yanyan Huang, Bin Zhao, and Lei Gao  »View Author Affiliations


JOSA A, Vol. 29, Issue 7, pp. 1436-1444 (2012)
http://dx.doi.org/10.1364/JOSAA.29.001436


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Abstract

Goos–Hänchen (GH) shift of a transverse-magnetic (TM) wave reflected from a semi-infinite anisotropic metamaterial consisting of aligned metallic nanowires in a dielectric matrix is investigated. Based on Bruggeman effective medium theory, we obtain the conditions for realizing the negative refraction, which are dependent on both the incident wavelength and the volume fraction of metallic inclusions. Then, we investigate the GH shifts from the composite metamaterial with positive and negative refractions with the stationary-phase method. Numerical results show that the enhancement of GH shift can be achieved near the pseudo-Brewster angle for small volume fractions and at the close-to-grazing incidence for large volume fractions. We further find that for positively refractive metamaterials with weak absorption, one can realize the transition from negative GH shift to the positive one by adjusting the incident wavelength. However, for negatively refractive composite metamaterials, the reversal of the GH shifts may take place by the adjustment of the volume fraction instead of the incident wavelength. In order to demonstrate the validity of the stationary-phase approach, numerical simulations are performed for a Gaussian-shaped beam. In the end, by using COMSOL simulation, a comprehensive understanding is given and the above analysis is confirmed.

© 2012 Optical Society of America

OCIS Codes
(160.1190) Materials : Anisotropic optical materials
(260.2110) Physical optics : Electromagnetic optics
(260.2065) Physical optics : Effective medium theory

ToC Category:
Materials

History
Original Manuscript: March 9, 2012
Revised Manuscript: May 14, 2012
Manuscript Accepted: May 30, 2012
Published: June 28, 2012

Citation
Yanyan Huang, Bin Zhao, and Lei Gao, "Goos–Hänchen shift of the reflected wave through an anisotropic metamaterial containing metal/dielectric nanocomposites," J. Opt. Soc. Am. A 29, 1436-1444 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-7-1436

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