Nanoantennas for visible and infrared radiation.
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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
Flat-topped pattern synthesis of optical leaky-wave antennas
TL;DR: In this paper, a synthesis procedure is proposed to achieve a flat-topped radiation pattern in optical leaky-wave antennas (OLWAs), in which the antenna is divided into sections, each with an appropriate phase constant, length and leakage constant.
Proceedings ArticleDOI
Arrays of Bowtie Plasmonic Nanoantennas for Field Enhancement in MOEMS
TL;DR: In this article, a linear array of plasmonic bowtie structures is used to concentrate the optical field into a dielectric channel, and numerical simulations using the finite element method to analyze field distributions that can be achieved by the use of the bowtie antenna and the possibility to tailor these fields.
Proceedings ArticleDOI
Antenna Tapering Strategy for Near-Field Enhancement Optimization in Terahertz Gold Nanocavities
Vincenzo Aglieri,Xin Jin,Andrea Rovere,Riccardo Piccoli,Roberto Morandotti,Roberto Macaluso,Andrea Toma,Luca Razzari +7 more
TL;DR: In this article, an optimal tapering angle was proposed to obtain higher quality factors and, at least, twofold higher local near-field enhancement in comparison with standard dipolar nanoantennas.
Proceedings ArticleDOI
Effect of Metallic Antenna Shape on the Near-Field Coupling to a Semiconductor Quantum Well
Michael Gehl,Sander Zandbergen,Ricky Gibson,Muriel Béchu,Nima Nader Esfahani,Joshua R. Hendrickson,Jasmine Sears,Patrick Keiffer,Martin Wegener,Galina Khitrova +9 more
TL;DR: In this paper, an array of metallic antennae with wire, square and split-ring shapes are fabricated on a near-surface quantum well and investigated using photoluminescence, transmission and transient pump-probe experiments.
References
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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.