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Proceedings Paper

Super-resolving metallo-dielectric flat lens
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Paper Abstract

We characterise two geometries of silver-dielectric layered or single layer patterned lenses for subwavelength imaging in the visible spectral range. The first consists of a periodic multilayer operating for the TM polarisation in a planar geometry, and the other is a grooved structure with rotational symmetry operating for the radial polarisation. For the multilayer superlens, diffraction-free propagation is conditioned on the phase flatness of the transfer function. Low-loss, diffraction-free transmission is demonstrated at micrometer distances and compared to diffractive propagation involving evanescent waves. The silver single layer lens, in turn, has double-sided grooves and no on-axis aperture. In another version the single layer lens has slits and no on-axis aperture, all rings and a stop are integrated with a fiber. Both lenses focus a far-field source into a far-field spot. They perform like a high numerical aperture optical objective and obey the diffraction limit.

Paper Details

Date Published: 31 December 2009
PDF: 10 pages
Proc. SPIE 7388, Ninth International Conference on Correlation Optics, 73880T (31 December 2009); doi: 10.1117/12.853071
Show Author Affiliations
Rafal Kotyński, Univ. of Warsaw (Poland)
Tomasz Stefaniuk, Univ. of Warsaw (Poland)
Piotr Wróbel, Univ. of Warsaw (Poland)
Tomasz J. Antosiewicz, Univ. of Warsaw (Poland)
Tomasz Szoplik, Univ. of Warsaw (Poland)


Published in SPIE Proceedings Vol. 7388:
Ninth International Conference on Correlation Optics
Oleg V. Angelsky, Editor(s)

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