Gate-tunable Epsilon-near-zero meta-structures (Conference Presentation)

Howard Lee

doi:10.1117/12.2531446

9 September 2019 Gate-tunable Epsilon-near-zero meta-structures (Conference Presentation)

Howard Lee

Proceedings Volume 11082, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII; 110820J (2019) https://doi.org/10.1117/12.2531446
Event: SPIE Nanoscience + Engineering, 2019, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

Howard Lee "Gate-tunable Epsilon-near-zero meta-structures (Conference Presentation)", Proc. SPIE 11082, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII, 110820J (9 September 2019); https://doi.org/10.1117/12.2531446

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