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Proceedings Paper

Long-wavelength infrared surface plasmons on Ga-doped ZnO films excited via 2D hole arrays for extraordinary optical transmission
Author(s): Justin W. Cleary; Nima Nader Esfahani; Shivashankar Vangala; Junpeng Guo; Joshua R. Hendrickson; Kevin D. Leedy; Darren Thomson; David C. Look
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Paper Abstract

Extraordinary optical transmission (EOT) through highly conductive ZnO films with sub-wavelength hole arrays is investigated in the long-wavelength infrared regime. EOT is facilitated by the excitation of surface plasmon polaritons (SPPs) and can be tuned utilizing the physical structure size such as period. Pulse laser deposited Ga-doped ZnO has been shown to have fluctuations in optical and electrical parameters based on fabrication techniques, providing a complimentary tuning means. The sub-wavelength 2D hole arrays are fabricated in the Ga-doped ZnO films via standard lithography and etching processes. Optical reflection measurements completed with a microscope coupled FTIR system contain absorption resonances that are in agreement with analytical theories for excitation of SPPs on 2D structures. EOT through Ga-doped ZnO is numerically demonstrated at wavelengths where SPPs are excited. This highly conductive ZnO EOT structure may prove useful in novel integrated components such as tunable biosensors or surface plasmon coupling mechanisms.

Paper Details

Date Published: 11 September 2013
PDF: 8 pages
Proc. SPIE 8809, Plasmonics: Metallic Nanostructures and Their Optical Properties XI, 88090L (11 September 2013); doi: 10.1117/12.2022278
Show Author Affiliations
Justin W. Cleary, Air Force Research Lab. (United States)
Nima Nader Esfahani, Air Force Research Lab. (United States)
Solid State Scientific Corp. (United States)
Univ. of Central Florida (United States)
Shivashankar Vangala, Air Force Research Lab. (United States)
Solid State Scientific Corp. (United States)
Junpeng Guo, Air Force Research Lab. (United States)
Univ. of Alabama in Huntsville (United States)
Wyle Labs., Inc. (United States)
Joshua R. Hendrickson, Air Force Research Lab. (United States)
Kevin D. Leedy, Air Force Research Lab. (United States)
Darren Thomson, Air Force Research Lab. (United States)
David C. Look, Air Force Research Lab. (United States)
Wyle Labs., Inc. (United States)
Wright State Univ. (United States)


Published in SPIE Proceedings Vol. 8809:
Plasmonics: Metallic Nanostructures and Their Optical Properties XI
Mark I. Stockman, Editor(s)

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