Open AccessTwo-dimensional hybrid photonic/plasmonic crystal cavities
Author(s) -
Tsung-Li Liu,
Kasey J. Russell,
Shanying Cui,
Evelyn L. Hu
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.008219
Subject(s) - photonic crystal , materials science , plasmon , optics , surface plasmon , radiative transfer , optoelectronics , dielectric , band gap , crystal (programming language) , absorption (acoustics) , physics , computer science , programming language
We present a 2-D plasmonic crystal design with visible band-gap by combining a 2-D photonic crystal with TM band-gap and a silver surface. Simulations show that the presence of the silver surface gives rise to an expanded band-gap. A plasmonic crystal defect cavity with Q ~300 and mode volume ~1.9x10(-2) (λ/n) (3) can be formed using our design. The total Q of such a cavity is determined by both the radiative loss of the dielectric component, as well as absorption loss to the metal. We provide design criteria for the optimization of the total Q to allow high radiative or extraction efficiency.