Super-resolving metallo-dielectric flat lens

Rafal Kotyński; Tomasz Stefaniuk; Piotr Wróbel; Tomasz J. Antosiewicz; Tomasz Szoplik

doi:10.1117/12.853071

31 December 2009 Super-resolving metallo-dielectric flat lens

Rafal Kotyński, Tomasz Stefaniuk, Piotr Wróbel, Tomasz J. Antosiewicz, Tomasz Szoplik

Proceedings Volume 7388, Ninth International Conference on Correlation Optics; 73880T (2009) https://doi.org/10.1117/12.853071
Event: Correlation Optics 2009, 2009, Chernivsti, Ukraine

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.

Citation Download Citation

Rafal Kotyński, Tomasz Stefaniuk, Piotr Wróbel, Tomasz J. Antosiewicz, and Tomasz Szoplik "Super-resolving metallo-dielectric flat lens", Proc. SPIE 7388, Ninth International Conference on Correlation Optics, 73880T (31 December 2009); https://doi.org/10.1117/12.853071

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