8 February 2011 Enhanced light transmission through a metallic nanolens consisting of multiple nanorings
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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, Youngjin Oh, Jong-ryul Choi, Jong-ryul Choi, Kyujung Kim, Kyujung Kim, Donghyun Kim, 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); doi: 10.1117/12.874489; https://doi.org/10.1117/12.874489
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