Green's tensor calculations of plasmon resonances of single holes and hole pairs in thin gold films
Journal article, 2008
We present numerical calculations of the plasmon properties of single-hole and hole-pair structures in optically thin gold films obtained with the Green's tensor formalism for stratified media. The method can be used to obtain the optical properties of a given hole system, without problems associated with the truncation of the infinite metal film. The calculations are compared with previously published experimental data and an excellent agreement is found. In particular, the calculations are shown to reproduce the evolution of the hole plasmon resonance spectrum as a function of hole diameter, film thickness and hole separation.
EXTRAORDINARY OPTICAL-TRANSMISSION
STRATIFIED MEDIA
ARRAYS
NANOMETRIC HOLES
LIGHT
METAL-FILMS
SHAPE
NANOHOLES
GRAINS
SCATTERING
Author
Joan Alegret
Chalmers, Applied Physics, Bionanophotonics
P. Johansson
Örebro University
Mikael Käll
Chalmers, Applied Physics, Bionanophotonics
New Journal of Physics
1367-2630 (ISSN)
Vol. 10 13- 105004Subject Categories
Other Engineering and Technologies
DOI
10.1088/1367-2630/10/10/105004