Theory of extraordinary optical transmission through subwavelength hole arrays

Details Theory of extraordinary optical transmission through subwavelength hole arrays Theory of extraordinary optical transmission through subwavelength hole arrays

2000-08-14

arxiv.org/abs/cond-mat/0008204v1

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.86.1114

We present a fully three-dimensional theoretical study of the extraordinary transmission of light through subwavelength hole arrays in optically thick metal films. Good agreement is obtained with experimental data. An analytical minimal model is also developed, which conclusively shows that the enhancement of transmission is due to tunneling through surface plasmons formed on each metal-dielectric interfaces. Different regimes of tunneling (resonant through a ''surface plasmon molecule", or sequential through two isolated surface plasmons) are found depending on the geometrical parameters defining the system.

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