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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 14 — Jul. 5, 2010
  • pp: 14794–14801

Metal-dielectric composites for beam splitting and far-field deep sub-wavelength resolution for visible wavelengths

Changchun Yan, Dao Hua Zhang, Yuan Zhang, Dongdong Li, and M. A. Fiddy  »View Author Affiliations


Optics Express, Vol. 18, Issue 14, pp. 14794-14801 (2010)
http://dx.doi.org/10.1364/OE.18.014794


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Abstract

We report beam splitting in a metamaterial composed of a silver-alumina composite covered by a layer of chromium containing one slit. By simulating distributions of energy flow in the metamaterial for H -polarized waves, we find that the beam splitting occurs when the width of the slit is shorter than the wavelength, which is conducive to making a beam splitter in sub-wavelength photonic devices. We also find that the metamaterial possesses deep sub-wavelength resolution capabilities in the far field when there are two slits and the central silver layer is at least 36 nm in thickness, which has potential applications in superresolution imaging.

© 2010 OSA

OCIS Codes
(100.6640) Image processing : Superresolution
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(230.1360) Optical devices : Beam splitters
(160.3918) Materials : Metamaterials

ToC Category:
Metamaterials

History
Original Manuscript: May 17, 2010
Revised Manuscript: June 11, 2010
Manuscript Accepted: June 13, 2010
Published: June 25, 2010

Citation
Changchun Yan, Dao Hua Zhang, Yuan Zhang, Dongdong Li, and M. A. Fiddy, "Metal-dielectric composites for beam splitting and far-field deep sub-wavelength resolution for visible wavelengths," Opt. Express 18, 14794-14801 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-14-14794


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