Mie plasmon enhanced diffraction of light from nanoporous metal surfaces.
The diffractive properties of gold films with a periodic lattice of sub-micron voids beneath the surface are investigated. It has been shown that nanoporous metal surfaces exhibit frequency-selective non-dispersive diffraction enhanced by Mie plasmons in nanovoids, which leads to absolute angular tolerance of the diffracted beam intensity that can be useful for a variety of applications covering angle-tolerant optical filters, deflectors, absorbers, and beam splitters. Diffraction spectra are measured and calculated to support these conclusions, showing good qualitative agreement.
Teperik
Tatiana V
TV
Popov
Vyacheslav V
VV
García de Abajo
F Javier
FJ
Kelf
Tim A
TA
Sugawara
Yoshihiro
Y
Baumberg
Jeremy J
JJ
Abdelsalem
Mamdouh
M
Bartlett
Philip N
PN