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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 7 — Apr. 1, 2009
  • pp: 890–892

Hypergratings: nanophotonics in planar anisotropic metamaterials

Sukosin Thongrattanasiri and Viktor A. Podolskiy  »View Author Affiliations


Optics Letters, Vol. 34, Issue 7, pp. 890-892 (2009)
http://dx.doi.org/10.1364/OL.34.000890


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Abstract

We present a technique capable of producing subwavelength focal spots in planar nonresonant structures not limited to the near-field of the source. The approach combines the diffraction gratings that generate the high-wave-vector-number modes and planar slabs of homogeneous anisotropic metamaterials that propagate these waves and combine them at the subwavelength focal spots. In a sense, the technique combines the benefits of Fresnel lens, near-field zone plates, hyperlens, and superlens and at the same time resolves their fundamental limitations. Several realizations of the proposed technique for visible, near-IR, and mid-IR frequencies are proposed, and their performance is analyzed theoretically and numerically. Generalizations of the developed approach for subdiffractional imaging and on-chip photonics are suggested.

© 2009 Optical Society of America

OCIS Codes
(110.2990) Imaging systems : Image formation theory
(160.1190) Materials : Anisotropic optical materials
(050.1965) Diffraction and gratings : Diffractive lenses
(160.3918) Materials : Metamaterials

ToC Category:
Materials

History
Original Manuscript: January 21, 2009
Manuscript Accepted: February 13, 2009
Published: March 17, 2009

Citation
Sukosin Thongrattanasiri and Viktor A. Podolskiy, "Hypergratings: nanophotonics in planar anisotropic metamaterials," Opt. Lett. 34, 890-892 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-7-890

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