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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2012, Volume 96, Issue 4, Pages 262–267
(Mi jetpl3209)
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This article is cited in 3 scientific papers (total in 3 papers)
CONDENSED MATTER
Two-dimensional plasmonic eigenmode nanolocalization in
an inhomogeneous metal-dielectric-metal slot waveguide
D. A. Smirnovaa, A. I. Smirnovb, A. A. Zharovab a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhnii Novgorod
b Institute of Applied Physics, Russian Academy of Sciences, Nizhnii Novgorod
Abstract:
We show that transverse, with respect to the propagation
direction, local narrowing of a metal-dielectric-metal plasmonic slot
waveguide leads to a two-dimensional surface plasmon nanolocalization and can
squeeze the plasmon eigenmode into a spot with a characteristic size of about
several tens of nanometers. We demonstrate that the simultaneous waveguide
tapering and decreasing transverse narrowing scale make possible an
enhancement of the plasmon propagation distance in comparison with the
homogeneous waveguide. We also find the fundamental limit of 2D plasmon
nanolocalization, which is of the same order as the depth of penetration of the
electromagnetic field into a metal which is actually independent of the field frequency in
the near infrared domain.
Received: 10.05.2012 Revised: 06.06.2012
Citation:
D. A. Smirnova, A. I. Smirnov, A. A. Zharov, “Two-dimensional plasmonic eigenmode nanolocalization in
an inhomogeneous metal-dielectric-metal slot waveguide”, Pis'ma v Zh. Èksper. Teoret. Fiz., 96:4 (2012), 262–267; JETP Letters, 96:4 (2012), 245–250
Linking options:
https://www.mathnet.ru/eng/jetpl3209 https://www.mathnet.ru/eng/jetpl/v96/i4/p262
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