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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 26 — Dec. 26, 2005
  • pp: 10673–10680

Flat lens without optical axis: Theory of imaging

Wentao T. Lu and Srinivas Sridhar  »View Author Affiliations

Optics Express, Vol. 13, Issue 26, pp. 10673-10680 (2005)

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We derive a general theory for imaging by a flat lens without optical axis. We show that the condition for imaging requires a material having elliptic dispersion relations with negative group refraction. This medium is characterized by two intrinsic parameters σ and κ. Imaging can be achieved with both negative and positive wave vector refraction if σ is a positive constant. The Veselago-Pendry lens is a special case with σ = 1 and κ = 0. A general law of refraction for anisotropic media is revealed. Realizations of the imaging conditions using anisotropic media and inhomogeneous media, particularly photonic crystals, are discussed. Numerical examples of imaging and requirements for sub-wavelength imaging are also presented.

© 2005 Optical Society of America

OCIS Codes
(080.3620) Geometric optics : Lens system design
(100.6640) Image processing : Superresolution
(110.2990) Imaging systems : Image formation theory
(260.2030) Physical optics : Dispersion

ToC Category:
Research Papers

Wentao T. Lu and Srinivas Sridhar, "Flat lens without optical axis: Theory of imaging," Opt. Express 13, 10673-10680 (2005)

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