%0 Journal Article
%T Compact Antenna for Efficient and Unidirectional Launching and Decoupling of Surface Plasmons
%+ Laboratoire Charles Fabry de l'Institut d'Optique / Naphel
%+ Institut de Science et d'ingénierie supramoléculaires (ISIS)
%+ lp2n-03,lp2n-13
%A Baron, Alexandre
%A Devaux, Eloïse
%A Rodier, Jean-Claude
%A Hugonin, Jean-Paul
%A Rousseau, Emmanuel
%A Genet, Cyriaque
%A Ebbesen, Thomas, W.
%A Lalanne, Philippe
%< avec comité de lecture
%@ 1530-6984
%J Nano Letters
%I American Chemical Society
%V 11
%N 10
%P 4207
%8 2011-09-12
%D 2011
%Z 1109.2032
%R 10.1021/nl202135w
%K Surface plasmon polariton
%K unidirectional launcher and decoupler
%K plasmonic nanoantenna
%K diffraction gratings
%Z Physics [physics]/Physics [physics]/Optics [physics.optics]
%Z Engineering Sciences [physics]/Electromagnetism
%Z Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
%Z Engineering Sciences [physics]/Optics / PhotonicJournal articles
%X Controlling the launching efficiencies and the directionality of surface plasmon polaritons (SPPs) and their decoupling to freely propagating light is a major goal for the development of plasmonic devices and systems. Here, we report on the design and experimental observation of a highly efficient unidirectional surface plasmon launcher composed of eleven subwavelength grooves, each with a distinct depth and width. Our observations show that, under normal illumination by a focused Gaussian beam, unidirectional SPP launching with an efficiency of at least 52% is achieved experimentally with a compact device of total length smaller than 8 μm. Reciprocally, we report that the same device can efficiently convert SPPs into a highly directive light beam emanating perpendicularly to the sample.
%G English
%L hal-00675332
%U https://hal.science/hal-00675332
%~ IOGS
%~ CNRS
%~ UNIV-PSUD
%~ UNIV-STRASBG1
%~ UNIV-STRASBG
%~ PARISTECH
%~ LCFIO
%~ LP2N
%~ LP2N_03
%~ INC-CNRS
%~ UNIV-PARIS-SACLAY
%~ UNIV-PSUD-SACLAY
%~ SITE-ALSACE
%~ TEST2-HALCNRS