Nanoantennas for visible and infrared radiation.
TLDR
The role of plasmonic resonances on the performance of nanoantennas and the influence of geometrical parameters imposed by nanofabrication are discussed.Abstract:
Nanoantennas for visible and infrared radiation can strongly enhance the interaction of light with nanoscale matter by their ability to efficiently link propagating and spatially localized optical fields. This ability unlocks an enormous potential for applications ranging from nanoscale optical microscopy and spectroscopy over solar energy conversion, integrated optical nanocircuitry, opto-electronics and density-of-states engineering to ultra-sensing as well as enhancement of optical nonlinearities. Here we review the current understanding of metallic optical antennas based on the background of both well-developed radiowave antenna engineering and plasmonics. In particular, we discuss the role of plasmonic resonances on the performance of nanoantennas and address the influence of geometrical parameters imposed by nanofabrication. Finally, we give a brief account of the current status of the field and the major established and emerging lines of investigation in this vivid area of research.read more
Citations
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Journal ArticleDOI
Miniaturizing nanoantennas with hybrid photonic-plasmonic modes for improved metasurfaces.
Yoav Chachamovitz,Guy Bartal +1 more
TL;DR: This Letter shows that nanoantennas carved from hybrid plasmonic-dielectric waveguides preserve the unique properties of the hybrid modes, showing stronger confinement and better tunability at a relatively low loss, emanating from the coupling between the dielectric and plasMonic modes.
Journal ArticleDOI
Low-epsilon titanium oxide antenna infrared photodetector.
TL;DR: This work provides a new idea to surmount the small size limit of a noble metal optical antenna whose permittivity is heavily negative through in situ oxidation of TiOx that is covered by Au film.
Proceedings ArticleDOI
Enhancement of second-harmonic generation from gold nanoparticles through passive elements
Robert Czaplicki,Hannu Husu,Jouni Mäkitalo,Roope Siikanen,Joonas Lehtolahti,Fanne Laukkanen,Markku Kuittinen,Martti Kauranen +7 more
TL;DR: In this paper, the authors show that the presence of passive elements enhances the efficiency of second-harmonic generation (SHG) in the optical domain by improving the directionality of radiation from the antennas.
Posted Content
Upper bound for light absorption assisted by a nanoantenna
TL;DR: In this article, the authors derived an upper bound for light absorption by a dipolar absorber in a given environment, which can be a nanoan-tenna or any complex medium.
A wideband hybrid plasmonic fractal patch nanoantenna
Riffat T. Hussien,Dheif I. Abood +1 more
TL;DR: In this article, a plasmonic optical fractal patch antenna covering three optical communication bands was proposed for intra/inter chip optical interconnects, which is a rectangular tree-shaped fractal based antenna.
References
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Book
Absorption and Scattering of Light by Small Particles
TL;DR: In this paper, a Potpourri of Particles is used to describe surface modes in small Particles and the Angular Dependence of Scattering is shown to be a function of the size of the particles.
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Computational Electrodynamics: The Finite-Difference Time-Domain Method
TL;DR: This paper presents background history of space-grid time-domain techniques for Maxwell's equations scaling to very large problem sizes defense applications dual-use electromagnetics technology, and the proposed three-dimensional Yee algorithm for solving these equations.
Journal ArticleDOI
Probing Single Molecules and Single Nanoparticles by Surface-Enhanced Raman Scattering
Shuming Nie,Steven R. Emory +1 more
TL;DR: In this article, surface-enhanced Raman scattering was used to detect single molecules and single nanoparticles at room temperature with the use of surface enhanced Raman, and the intrinsic Raman enhancement factors were on the order of 10 14 to 10 15, much larger than the ensemble-averaged values derived from conventional measurements.
Journal ArticleDOI
Plasmonics for improved photovoltaic devices
Harry A. Atwater,Albert Polman +1 more
TL;DR: Recent advances at the intersection of plasmonics and photovoltaics are surveyed and an outlook on the future of solar cells based on these principles is offered.