Efficient unidirectional nanoslit couplers for surface plasmons
F. López-Tejeira,Sergio G. Rodrigo,Luis Martín-Moreno,Francisco J. Garcia-Vidal,Eloïse Devaux,Thomas W. Ebbesen,Joachim R. Krenn,Ilya P. Radko,Sergey I. Bozhevolnyi,María Ujué González,Jean-Claude Weeber,Alain Dereux +11 more
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TLDR
In this paper, a back-side slit-illumination method that incorporates a periodic array of grooves carved into the front side of a thick metal film was proposed to enhance the propagation of SPPs away from the array, enabling them to be unidirectionally launched from, and focused to, a localized point.Abstract:
The emerging field of plasmonics is based on exploiting the coupling between light and collective electronic excitations within conducting materials known as surface plasmons. Because the so-called surface plasmon polariton (SPP) modes that arise from this coupling are not constrained by the optical diffraction limit, it is hoped that they could enable the construction of ultracompact optical components1,2. But in order that such potential can be realized, it is vital that the relatively poor light–SPP coupling be improved. This is made worse by the fact that the incident light that is conventionally used to launch SPPs in a metal film 3,4,5,6 is a significant source of noise, unless directed away from a region of interest, which then decreases the signal and increases the system’s size. Back-side illumination of subwavelength apertures in optically thick metal films7,8,9,10,11,12,13 eliminates this problem but does not ensure a unique propagation direction for the SPP. We propose a novel back-side slit-illumination method that incorporates a periodic array of grooves carved into the front side of a thick metal film. Bragg reflection enhances the propagation of SPPs away from the array, enabling them to be unidirectionally launched from, and focused to, a localized point.read more
Citations
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Journal ArticleDOI
Nanostructured plasmonic sensors.
Matthew E. Stewart,Christopher R. Anderton,Lucas B. Thompson,Joana Maria,Stephen K. Gray,John A. Rogers,Ralph G. Nuzzo +6 more
TL;DR: This work has shown that coherent oscillations of conduction electrons on a metal surface excited by electromagnetic radiation at a metal -dielectric interface can be associated with surface plasmons, which have potential applications in miniaturized optical devices, sensors, and photonic circuits.
Journal ArticleDOI
Unidirectional emission of a quantum dot coupled to a nanoantenna
Alberto G. Curto,Giorgio Volpe,Tim H. Taminiau,Mark P. Kreuzer,Romain Quidant,Niek F. van Hulst +5 more
TL;DR: An optical antenna is designed, a shrunk-down version of the Yagi-Uda design used in microwave and radio communication, and it is shown that coupling the quantum dot to the antenna provides control over the direction of the emitted light.
Journal ArticleDOI
Light passing through subwavelength apertures
TL;DR: In this paper, the authors provide a perspective on the recent developments in the transmission of light through subwavelength apertures in metal films, and the physical mechanisms operating in the different structures considered are analyzed within a common theoretical framework.
Journal ArticleDOI
Polarization-Controlled Tunable Directional Coupling of Surface Plasmon Polaritons
Jiao Lin,J. P. Balthasar Mueller,Qian Wang,Guanghui Yuan,Nicholas Antoniou,Xiaocong Yuan,Federico Capasso +6 more
TL;DR: Plasmonic couplers that overcome limits in the polarization sensitivity of the coupling efficiency and in controlling the directionality of the SPPs are designed and demonstrated using polarization-sensitive apertures in a gold film.
Journal ArticleDOI
Plasmon-controlled fluorescence: a new paradigm in fluorescence spectroscopy
Joseph R. Lakowicz,Krishanu Ray,Mustafa H. Chowdhury,Henryk Szmacinski,Yi Fu,Jian Zhang,Kazimierz Nowaczyk +6 more
TL;DR: An intuitive description of the complex physics of plasmons and near-field interactions is provided and how these effects will result in new classes of experimental procedures, novel probes, bioassays and devices are suggested.
References
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