Super-focusing using plasmonic lens based on super oscillation effect

Mahmoud El Maklizi; Mostafa Hendawy; Mohamed A. Swillam

doi:10.1117/12.2078392

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16 March 2015 Super-focusing using plasmonic lens based on super oscillation effect

Mahmoud El Maklizi, Mostafa Hendawy, Mohamed A. Swillam

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Proceedings Volume 9359, Optical Components and Materials XII; 93590P (2015) https://doi.org/10.1117/12.2078392
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

In this paper, a novel meta surface is proposed for super-focusing. This surface contains two slits surrounded by finite corrugations for enhanced focusing. This simple surface has the super-focusing ability to focus both near and far field light in a hot-spot with FWHM much smaller than half the wavelength of the incident light. The structure is suitable for one dimensional and two dimensional focusing applications. The enhanced transmission through the double slit is also utilized for directional beaming over a wide cone of angles. Moreover, various structures have been proposed for superfocusing in the visible and ultraviolet wavelengths. The proposed structure lends itself to various applications including subwavelength imaging and nanolithography.

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Mahmoud El Maklizi, Mostafa Hendawy, and Mohamed A. Swillam "Super-focusing using plasmonic lens based on super oscillation effect", Proc. SPIE 9359, Optical Components and Materials XII, 93590P (16 March 2015); https://doi.org/10.1117/12.2078392

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