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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 22 — Oct. 27, 2008
  • pp: 18505–18513

Resonant absorption and mode conversion in a transition layer between positive-index and negative-index media

Kihong Kim, D.-H. Lee, and H. Lim  »View Author Affiliations


Optics Express, Vol. 16, Issue 22, pp. 18505-18513 (2008)
http://dx.doi.org/10.1364/OE.16.018505


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Abstract

We study the propagation of electromagnetic waves through a transition layer between positive-index and negative-index media theoretically. We consider three models where both the dielectric permittivity ε and the magnetic permeability µ change linearly from positive values to negative values. At the positions where ε or µ vanishes, the mode conversion of the incident electromagnetic waves into longitudinal plasma oscillations can occur. Using the invariant imbedding theory of mode conversion in inhomogeneous media, we calculate the mode conversion coefficient and the electromagnetic field profile in a numerically exact manner. We find that strong mode conversion can occur for both s- and p-polarized incident waves. The dependence of mode conversion on polarization is influenced very sensitively by the spatial profiles of ε and µ. We also discuss the interaction effects between mode conversion phenomena occurring at two resonance points located nearby.

© 2008 Optical Society of America

OCIS Codes
(350.3618) Other areas of optics : Left-handed materials
(160.3918) Materials : Metamaterials
(260.2710) Physical optics : Inhomogeneous optical media

ToC Category:
Metamaterials

History
Original Manuscript: September 8, 2008
Revised Manuscript: October 20, 2008
Manuscript Accepted: October 23, 2008
Published: October 24, 2008

Citation
Kihong Kim, D.-H. Lee, and H. Lim, "Resonant absorption and mode conversion in a transition layer between positive-index and negative-index media," Opt. Express 16, 18505-18513 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-22-18505


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