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Proceedings Paper

A new concept to design high efficiency surface plasmon meta-couplers (Conference Presentation)
Author(s): Shulin Sun
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Paper Abstract

Surface plasmon polaritons (SPPs) have found numerous applications in photonics, but traditional devices to excite them (such as grating and prism couplers) all suffer inherent low-efficiency issues, since the generated SPPs can decouple back to free space and the reflection at the device surface can never be avoided. Here, based on a transparent gradient metasurface, we propose a new SPP-excitation scheme and numerically demonstrate that it exhibits inherently high efficiency ( 94%), since the designed meta-coupler kills both the decoupling and the reflection at its surface. As a proof of concept, we fabricate a meta-coupler in the microwave regime, and combine near- and far-field experiments to demonstrate that the achieved SPP-excitation efficiency reaches 75%, which is several times higher than all other available devices. Our findings can inspire the designs and realizations of high-performance plasmonic devices to harvest light-matter interactions.

Paper Details

Date Published: 9 November 2016
PDF: 1 pages
Proc. SPIE 9921, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV, 99211O (9 November 2016); doi: 10.1117/12.2237463
Show Author Affiliations
Shulin Sun, Fudan Univ. (China)

Published in SPIE Proceedings Vol. 9921:
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV
Satoshi Kawata; Din Ping Tsai, Editor(s)

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