Dennis, B.
, Czaplewski, D.
, Haftel, M.
, Lopez, D.
, Blumberg, G.
and Aksyuk, V.
(2015),
Diffraction limited focusing and directing of gap plasmons by a metal-dielectric-metal lens, Optics Express, [online], https://doi.org/10.1364/OE.23.021899, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918737
(Accessed April 25, 2024)
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Diffraction limited focusing and directing of gap plasmons by a metal-dielectric-metal lens
Published
Author(s)
, David Czaplewski, Michael Haftel, Daniel Lopez, Girsh Blumberg,
Abstract
Passive optical elements can play key roles in photonic applications such as plasmonic integrated circuits. Here we experimentally demonstrate passive gap-plasmon focusing and directing in two-dimensions. This is accomplished using a high numerical-aperture metal-dielectric-metal lens incorporated into a planar-waveguide device. Detailed fabrication via metal sputtering, oxide deposition, electron- and focused-ion- beam lithography, and argon ion-milling is reported. Diffraction-limited focusing is optically characterized by microscopically sampling out-coupled light. The measured focal distance and 0.9 um full-width-half-max spot size agree well with the calculated lens performance. The surface plasmon propagation length is measured by sampling light from multiple out-coupler slits.Citation
Optics Express
Volume
23
Issue
17
Pub Type
Journals
Download Paper
Keywords
Electro-optical devices, Integrated optics devices, Optical microelectromechanical devices, Plasmonics, Nanophotonics and photonic crystals
Citation
Created August 23, 2015, Updated October 12, 2021