Ultrafast plasmonics using transparent conductive oxide hybrids in the epsilon near-zero regime

The dielectric response of transparent conductive oxides near the bulk plasmon frequency is characterized by a refractive index less than vacuum. In analogy with x-ray optics, it is shown that this regime results in total external reflection and air-guiding of light. In addition, the strong reductio...

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Bibliographic Details
Published in:arXiv.org 2013-02
Main Authors: Traviss, Daniel, Bruck, Roman, Mills, Ben, Abb, Martina, Muskens, Otto L
Format: Article
Language:English
Subjects:
Indium tin oxides
Light reflection
Plasmonics
Polaritons
Refractivity
X ray optics
Online Access:Get full text
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Summary:The dielectric response of transparent conductive oxides near the bulk plasmon frequency is characterized by a refractive index less than vacuum. In analogy with x-ray optics, it is shown that this regime results in total external reflection and air-guiding of light. In addition, the strong reduction of the wavevector in the ITO below that of free space enables a new surface plasmon polariton mode which can be excited without requiring a prism or grating coupler. Ultrafast control of the surface plasmon polariton mode is achieved with a modulation amplitude reaching 20%.
ISSN:2331-8422
DOI:10.48550/arxiv.1302.6604