Near-infrared plasmonics with transparent conducting oxides (Conference Presentation)

Jongbum Kim*, Nathaniel Kinsey, Clayton DeVault, Aveek Dutta, Marcello Ferrera, Vladimir M. Shalaev, Alexandra Boltasseva

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


As a result of the significant attention in searching for alternative plasmonic materials for real-life nanophotonic devices, transparent conducting oxides (TCOs) have been proposed as promising constituent building blocks for telecommunication wavelengths. They are eminently practical materials because they are CMOS-compatible, can be grown on many different types of substrates, patterned by standard fabrication procedures, and integrated with many other standard technologies. Due to the ability of TCO nanostructures to support strong plasmonic resonance in the near infrared (NIR), metasurface devices, such as a quarter wave plate, have been demonstrated whose properties can be easily adjustable with post processing such as thermal annealing. Additionally, TCOs can be used as epsilon near zero (ENZ) materials in the NIR. From our recent study of the behavior of nanoantennae sitting upon a TCO substrate, we found that TCOs serve as an optical insulating media due to the high impedance of TCOs at the ENZ frequency, enabling emission shaping. Finally, the optical properties of TCOs can be varied by optical or electrical means. Current research is focused on studying the ultrafast carrier dynamics in doped zinc oxide films using pump-probe spectroscopy. We have shown that aluminum doped zinc oxide films can achieve a 40% change in reflection with ultrafast dynamics (<1ps) under a small fluence of 3mJ/cm2. Consequently, TCOs are shown to be extremely flexible materials, enabling fascinating physics and unique devices for applications in the NIR regime. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Original languageEnglish
Title of host publicationMetamaterials X
EditorsAllan D. Boardman, Nigel P. Johnson, Kevin F. MacDonald, Ekmel Ozbay
ISBN (Print)9781510601284
Publication statusPublished - 18 Apr 2016
EventConference on Metamaterials X - Brussels, Belgium
Duration: 4 Apr 20167 Apr 2016

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X


ConferenceConference on Metamaterials X


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