Tunability and Optimization of Coupling Efficiency in Tamm Plasmon Modes

Author

Che-Yuan Chang ; Yi-Hsuan Chen ; Yu-Lin Tsai ; Hao-Chung Kuo ; Kuo-Ping Chen

Author_Institution

Inst. of Imaging & Biomed. Photonic, Nat. Chiao-Tung Univ., Tainan, Taiwan

Volume

21

Issue

4

fYear

2015

fDate

July-Aug. 2015

Firstpage

262

Lastpage

267

Abstract

A Tamm plasmon polariton is a plasmonic resonance excited at the boundary between a photonic crystal and a metal. In this paper, a novel approach based on admittance loci is proposed to demonstrate the relation between thin-film structures and the corresponding Tamm plasmon modes. The tunability of the resonance wavelength and optimization of coupling efficiency are demonstrated. In addition, by using different metals to couple Tamm plasmon modes in the visible spectrum, silver has 4.7 times larger Q-factor than gold and 84 times larger than aluminum at 700 nm. The near-field enhancement of silver Tamm plasmon modes could be up to eight times larger than incident EM waves.

Keywords

photonic crystals; plasmonics; plasmons; silver; thin films; visible spectra; Ag; Tamm plasmon modes; admittance loci; couple Tamm plasmon modes; excited plasmonic resonance; incident EM waves; near-field enhancement; photonic crystal; resonance wavelength; thin-film structure; tunability; visible spectrum; wavelength 700 nm; Admittance; Couplings; Films; Plasmons; Reflectivity; Silver; Nanophotonics; Nanostructures; Plasmons; nanostructures; plasmons;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2014.2375151

Filename

6967778