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Proceedings Paper

Gate-tunable Epsilon-near-zero meta-structures (Conference Presentation)
Author(s): Howard Lee

Paper Abstract

The optical response of epsilon-near-zero (ENZ) materials has been a topic of significant interest in the last few years as the electromagnetic field inside media with near-zero permittivity has been shown to exhibit unique optical properties, including strong electromagnetic wave confinement, non-reciprocal magneto-optical effects, and abnormal nonlinearity. These ultrathin ENZ materials are promising for the enhancement of quantum emission for optical sensing and enhanced absorption/emittivity for energy harvesting. This talk will review our recent development on a gate-tunable conducting oxide epsilon-near-zero meta-structures. I will present our recent development on the use of gate-tunable materials, transparent conducting oxides, to demonstrate an electrically tunable ultrathin ENZ perfect absorber enabled by the excitation of ENZ mode. In addition, I will present the active control of emissive properties of quantum emitters and enhanced optical nonlinearity in hybrid ENZ-plasmonic heterostructures.

Paper Details

Date Published: 9 September 2019
Proc. SPIE 11082, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII, 110820J (9 September 2019); doi: 10.1117/12.2531446
Show Author Affiliations
Howard Lee, Baylor Univ. (United States)

Published in SPIE Proceedings Vol. 11082:
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII
Din Ping Tsai; Takuo Tanaka, Editor(s)

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