Broadband terahertz plasmonic response of touching InSb disks

Broadband terahertz plasmonic response of touching InSb disks

The plasmonic behavior of dimers of touching semiconductor disks is studied experimentally in the difficult-to-realize regime where the disks are only marginally overlapping. Previous theoretical studies have shown that this geometry exhibits a highly efficient broadband response that may be very pr...

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Bibliographic Details
Main Authors: Hanham, S. M., Fernández-Domínguez, A. I., Teng, Jing Hua, Ang, S. S., Lim, K. P., Yoon, Soon Fatt, Ngo, C. Y., Klein, N., Pendry, J. B., Maier, Stefan A.
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2013
Subjects:
DRNTU::Engineering::Electrical and electronic engineering
Online Access:https://hdl.handle.net/10356/97103
http://hdl.handle.net/10220/10468
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Institution: Nanyang Technological University
Language: English
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Summary:The plasmonic behavior of dimers of touching semiconductor disks is studied experimentally in the difficult-to-realize regime where the disks are only marginally overlapping. Previous theoretical studies have shown that this geometry exhibits a highly efficient broadband response that may be very promising for light harvesting and sensing applications. By taking advantage of the plasmonic character of InSb in the terahertz regime, we experimentally confirm this broadband response and describe the associated strong field enhancement and sub-micrometer field confinement between the disks.

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