Enhanced light transmission through a metallic nanolens consisting of multiple nanorings

Youngjin Oh; Jong-ryul Choi; Kyujung Kim; Donghyun Kim

doi:10.1117/12.874489

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8 February 2011 Enhanced light transmission through a metallic nanolens consisting of multiple nanorings

Youngjin Oh, Jong-ryul Choi, Kyujung Kim, Donghyun Kim

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Proceedings Volume 7941, Integrated Optics: Devices, Materials, and Technologies XV; 794119 (2011) https://doi.org/10.1117/12.874489
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

In this study, we investigated light transmission based on a metallic nano-lens for imaging applications. The nano-lens consists of multiple nano-rings formed in a thin metal film. Four types of nano-lens structures in a 50-nm thick gold film were simulated using rigorous coupled-wave analysis. Each nano-lens is designed to operate as a lens element that focuses transmitted light. The results show the focal power increasing with the ring number and the enhancement of achievable numerical aperture compared to that of conventional lenses.

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Youngjin Oh, Jong-ryul Choi, Kyujung Kim, and Donghyun Kim "Enhanced light transmission through a metallic nanolens consisting of multiple nanorings", Proc. SPIE 7941, Integrated Optics: Devices, Materials, and Technologies XV, 794119 (8 February 2011); https://doi.org/10.1117/12.874489

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