Title

Long-Wavelength Infrared Surface Plasmons On Ga-Doped Zno Films Excited Via 2D Hole Arrays For Extraordinary Optical Transmission

Keywords

doped zinc oxides; EOT; infrared; plasmonics

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. © 2013 SPIE.

Publication Date

1-1-2013

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

8809

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.2022278

Socpus ID

84899919532 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84899919532

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