Three-dimensional point spread function of multilayered flat lenses and its application to extreme subwavelength resolution

The three-dimensional (3D) point spread function (PSF) of multilayered flat lenses was proposed in order to characterize the diffractive behavior of these subwavelength image formers. We computed the polarization-dependent scalar 3D PSF for a wide range of slab widths and for different dissipative m...

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Bibliographic Details
Published in:Journal of nanophotonics 2011-01, Vol.5 (1), p.051807-051807
Main Authors: Zapata-Rodriguez, Carlos J, Pastor Calle, David, Camps, Vincente, Caballero, Maria T, Miret, Juan J
Format: Article
Language:English
Subjects:
Depth of field
Lenses
Metamaterials
Nanocomposites
Nanostructure
Point spread functions
Three dimensional
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Summary:The three-dimensional (3D) point spread function (PSF) of multilayered flat lenses was proposed in order to characterize the diffractive behavior of these subwavelength image formers. We computed the polarization-dependent scalar 3D PSF for a wide range of slab widths and for different dissipative metamaterials. In terms similar to the Rayleigh criterion we determined unambiguously the limit of resolution featuring this type of image-forming device. We investigated the significant reduction of the limit of resolution by increasing the number of layers, which may drop nearly 1 order of magnitude. However, this super-resolving effect is obtained in detriment of reducing the depth of field. Limitations exist on the formation of 3D images.
ISSN:1934-2608
1934-2608
DOI:10.1117/1.3590244