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9 September 2019 Temperature-dependent plasmonic properties as a key to high-temperature nanophotonic designs (Conference Presentation)
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Abstract
All practical plasmonic metals suffer from inherent ohmic losses that naturally increase the temperature of resonantly excited plasmonic components. For instance, the operation temperature of plasmonic near-field transducers in heat assisted magnetic recording (HAMR) is estimated to be close to 300 - 500 0C. It is therefore imperative to understand the influence of temperature on the evolution of optical properties of thin metals films to perform systematic and rational design of practical high temperature nanophotonic components in a wide variety of research areas, including HAMR, photothermal therapy, thermophotovoltaics, and near field radiative heat transfer. In this talk, we will present the experimentally probed temperature induced deviations to the optical response of important plasmonic metals: gold, silver and titanium nitride up to 900 0C, and outline the dominant microscopic physical mechanisms governing the optical response. Using extensive numerical calculations, we demonstrate the importance of incorporating the temperature induced deviations into numerical models for accurate multiphysics modeling of practical high temperature nanophotonic applications - transducers for HAMR, broadband emitters for thermophotovoltaics and high temperature sensors.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alexandra Boltasseva, Harsha V. Reddy, Urcan Guler, Zhaxylyk A. Kudyshev, Shaimaa I. Azzam, Krishnakali Chaudhuri, Alexander V. Kildishev, and Vladimir M. Shalaev "Temperature-dependent plasmonic properties as a key to high-temperature nanophotonic designs (Conference Presentation)", Proc. SPIE 11082, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII, 110820R (9 September 2019); https://doi.org/10.1117/12.2528748
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