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17 September 2018 Ultrafast all-optical switching in a continuous layer gap plasmon metasurface (Conference Presentation)
Soham Saha, Aveek Dutta, Clayton DeVault, Vladimir Shalaev, Alexandra Boltasseva
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Proceedings Volume 10721, Active Photonic Platforms X; 107211F (2018) https://doi.org/10.1117/12.2320585
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States
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.
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Soham Saha, Aveek Dutta, Clayton DeVault, Vladimir Shalaev, and Alexandra Boltasseva "Ultrafast all-optical switching in a continuous layer gap plasmon metasurface (Conference Presentation)", Proc. SPIE 10721, Active Photonic Platforms X, 107211F (17 September 2018); https://doi.org/10.1117/12.2320585
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KEYWORDS
Ultrafast phenomena
Plasmons
Switching
Gold
Zinc oxide
Electronic circuits
Light-matter interactions
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