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8 March 2019 Through the (conducting) looking-glass: transparent conducting oxides for nanophotonic applications (Conference Presentation)
Alexandra Boltasseva, Clayton DeVault, Vincenzo Bruno, Soham Saha, Zhaxylyk Kudyshev, Aveek Dutta, Stefano Vezzoli, Marcello Ferrera, Daniele Faccio, Vladimir M. Shalaev
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Proceedings Volume 10919, Oxide-based Materials and Devices X; 109191T (2019) https://doi.org/10.1117/12.2512275
Event: SPIE OPTO, 2019, San Francisco, California, United States
Abstract
Transparent Conducting Oxide (TCO) materials are degenerately-doped, wide-bandgap semiconductors which exhibit simultaneous high-conductivity and visible transparency. These unique properties are well known and frequently exploited for technologies such as touch-screen devices. In recent years, TCOs have been recognized as a promising material platform for nanophotonic devices, namely because of their simple, compatible fabrication, low-losses, dynamic modulation, and novel low-index properties. In this talk, I will highlight recent progress in the field of TCO-based nanophotonics, share our ongoing results and observations, and discuss future research challenges and directions. In particular, I will discuss our progress in developing metal-dielectric hybrid metasurfaces which incorporate TCOs for all-optical, ultrafast switching. Here, we incorporate defect-rich zinc oxide with a refractory titanium nitride metasurface for efficient light modulation at near-terahertz switching frequencies. My talk will also focus on TCO films for studying and observing low-index phenomena. Our recent work with aluminum-doped zinc oxide films demonstrates the ability for low-index materials to both enhance negative refraction and engender strongly coupled plasmonic systems with large room-temperature Rabi frequencies. Our work signifies the strong potential for incorporating transparent conducting oxides into plasmonic and nanophotonic devices to provide advances toward practical technologies and depth in scientific understanding.
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Alexandra Boltasseva, Clayton DeVault, Vincenzo Bruno, Soham Saha, Zhaxylyk Kudyshev, Aveek Dutta, Stefano Vezzoli, Marcello Ferrera, Daniele Faccio, and Vladimir M. Shalaev "Through the (conducting) looking-glass: transparent conducting oxides for nanophotonic applications (Conference Presentation)", Proc. SPIE 10919, Oxide-based Materials and Devices X, 109191T (8 March 2019); https://doi.org/10.1117/12.2512275
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KEYWORDS
Nanophotonics
Transparent conducting oxide
Modulation
Plasmonics
Switching
Transparent conductors
Zinc oxide
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