Abstract
We theoretically demonstrate the coupling between localized surface plasmons (LSPs) and two types of hybrid Tamm plasmons (TPs) in a system consisting of a metallic nanowire array incorporated into a microcavity with an intracavity metal layer. Theoretical studies show that the interaction of the LSPs with these two hybrid TPs can be manipulated by changing the length of the cavity, and strong coupling between the LSPs and one of the hybrid TPs is observed, manifested by a huge anticrossing in the dispersion diagram. The coupling results in a surprisingly large splitting of 299 meV, as well as two branches of new hybrid TP-LSP modes. The hybrid TP-LSP modes feature both TP and LSP characteristics. The electric fields between the wire edges and the metal layer are significantly enhanced, and the magnetic fields are highly confined underneath the metal nanowires and to the interface of the metal layer. Furthermore, because of the coupling with the LSP, the coupling between these two hybrid TPs is also enhanced greatly in the considered structure. These findings hold promise in applications such as plasmon enhanced nonlinear nano-optics and reduction of lasing threshold in organic microcavities.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Hai Liu, Xiudong Sun, Fengfeng Yao, Yanbo Pei, Feng Huang, Haiming Yuan, and Yongyuan Jiang
Opt. Express 20(17) 19160-19167 (2012)
Junxue Chen and Jigang Hu
J. Opt. Soc. Am. B 31(7) 1600-1606 (2014)
Donghyun Kim
J. Opt. Soc. Am. A 23(9) 2307-2314 (2006)