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Perfect relay lens at microwave frequencies based on flattening a Maxwell lens |
JOSA B, Vol. 28, Issue 8, pp. 2025-2029 (2011)
http://dx.doi.org/10.1364/JOSAB.28.002025
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Abstract
We consider the design and implementation of a two-dimensional metamaterial relay lens, conceptually formed by flattening a Maxwell fisheye lens—a perfect imaging device—through the use of a coordinate transformation. Because Maxwell’s equations are form-invariant under coordinate transformations, the specifications for the constitutive parameters of the device are obtained immediately in a procedure that has now become known as transformation optics. To obtain a more favorable implementation of the lens, we seek a quasi-conformal transformation optics transformation that minimizes the required anisotropy, such that the resulting lens can be formed using isotropic, dielectric-only media. We demonstrate a flattened Maxwell lens at microwave frequencies using a nonresonant metamaterial and confirm its focusing and broad bandwidth behavior. Such planar, dielectric-only structures can be readily implemented in infrared and optical waveguides.
© 2011 Optical Society of America
OCIS Codes
(080.2740) Geometric optics : Geometric optical design
(080.3630) Geometric optics : Lenses
(220.4610) Optical design and fabrication : Optical fabrication
(350.4010) Other areas of optics : Microwaves
(350.6980) Other areas of optics : Transforms
(160.3918) Materials : Metamaterials
ToC Category:
Geometric Optics
History
Original Manuscript: May 26, 2011
Manuscript Accepted: June 22, 2011
Published: July 25, 2011
Citation
John Hunt, Gyushik Jang, and David R. Smith, "Perfect relay lens at microwave frequencies based on flattening a Maxwell lens," J. Opt. Soc. Am. B 28, 2025-2029 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-8-2025
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