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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Proceedings ArticleDOI
Tunable plasmonic Yagi-Uda nanoantenna
TL;DR: In this article, a novel tunable plasmonic Yagi-Uda nano-antenna driven by means of a feed element consisting of two closely spaced metal nanobars separated by a gap filled with a semiconductor was proposed.
Dissertation
Optical antennas for single emitters
TL;DR: In this paper, a near-field coupling of a single emitter to a resonant optical antenna is proposed to enhance the excitation and emission rates of a photon by an electronic transition in an atom, molecule or semiconductor.
Proceedings ArticleDOI
Optical switching of mid-infrared plasmonic nanoantennas based on germanium
Marco P. Fischer,Christian Schmidt,Johannes Stock,Emilie Sakat,Antonio Samarelli,Jacopo Frigerio,Paolo Biagioni,Douglas J. Paul,Giovanni Isella,Alfred Leitenstorfer,Daniele Brida +10 more
TL;DR: Germanium nanoantennas are activated by triggering a mid-infrared plasma response via ultrafast interband excitation as discussed by the authors, which allows complete activation of the plasmonic resonance for hundreds of picoseconds.
Dissertation
Digital Heterodyne Holography for Plasmonic Nanostructures
TL;DR: In this paper, a numerical model based on the finite element method was developed to simulate the scattered fields of nanostructures both in the near and far-field either in a reflection or transmission configuration for the illumination.
Book ChapterDOI
Fluorescence Spectroscopy Enhancement on Photonic Nanoantennas
TL;DR: In this paper, the authors briefly introduce the key concepts to understand the phenomenon of fluorescence enhancement with optical nanostructures, with the major goal to illustrate the different physical effects at play.
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.
Book
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.