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Proceedings Paper

Ultrafast all-optical switching in a continuous layer gap plasmon metasurface (Conference Presentation)
Author(s): Soham Saha; Aveek Dutta; Clayton DeVault; Vladimir Shalaev; Alexandra Boltasseva
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Paper Abstract

All-optical nanophotonic switches, not bound by the inherent RC delays of electronic circuits, have the potential to push data-processing speeds beyond the limits of Moore’s Law. This has lead to the investigation of light-matter interactions in nanostructured materials in several all-optical data processing applications. To have a true impact on the field of ultrafast data-transfer, it is important to demonstrate switching in the telecom frequency range. We have designed a continuous layer gap plasmon metasurface, comprising a layer of gold nanodisk resonators on a 20 nm film of ZnO deposited on an optically thick gold layer. The performance of the metasurface has been investigated through numerical studies, using the optical properties of as-grown gold and zinc oxide, characterized by ellipsometry. An on-off ratio of 10.6 dB has been observed in simulations. Experimental studies are underway. The findings of this research work will pave the pathway to the design of ultra-compact and ultrafast optical switches employing ultrafast, dynamically tunable metasurfaces.

Paper Details

Date Published: 17 September 2018
Proc. SPIE 10721, Active Photonic Platforms X, 107211F (17 September 2018); doi: 10.1117/12.2320585
Show Author Affiliations
Soham Saha, Purdue Univ. (United States)
Aveek Dutta, Purdue Univ. (United States)
Clayton DeVault, Purdue Univ. (United States)
Vladimir Shalaev, Purdue Univ. (United States)
Alexandra Boltasseva, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 10721:
Active Photonic Platforms X
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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