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Planar immersion lens with metasurfaces

Ho, John S. and Qiu, Brynan and Tanabe, Yuji and Yeh, Alexander J. and Fan, Shanhui and Poon, Ada S. Y. (2015) Planar immersion lens with metasurfaces. Physical Review B, 91 (12). Art. No. 125145. ISSN 1098-0121.

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The solid immersion lens is a powerful optical tool that allows light entering material from air or a vacuum to focus to a spot much smaller than the free-space wavelength. Conventionally, however, the lenses rely on semispherical topographies and are nonplanar and bulky, which limits their integration in many applications. Recently, there has been considerable interest in using planar structures, referred to as metasurfaces, to construct flat optical components for manipulating light in unusual ways. Here, we propose and demonstrate the concept of a planar immersion lens based on metasurfaces. The resulting planar device, when placed near an interface between air and dielectric material, can focus electromagnetic radiation incident from air to a spot in the material smaller than the free-space wavelength. As an experimental demonstration, we fabricate an ultrathin and flexible microwave lens and further show that it achieves wireless energy transfer in material mimicking biological tissue.

Item Type:Article
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URLURL TypeDescription DOIArticle Paper
Additional Information:© 2015 American Physical Society. Received 15 September 2014; revised manuscript received 5 March 2015; published 30 March 2015.
Issue or Number:12
Classification Code:PACS: 42.15.Eq, 81.05.Xj, 78.67.Pt
Record Number:CaltechAUTHORS:20150423-102357253
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56913
Deposited By: Tony Diaz
Deposited On:23 Apr 2015 19:31
Last Modified:03 Oct 2019 08:18

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