Aluminum nanotripods for light-matter coupling robust to nanoemitter orientation
Author(s)
Pacheco-Pena, Victor
Fernandez-Dominguez, Antonio I
Luo, Yu
Beruete, Miguel
Navarro-Cia, Miguel
Type
Journal Article
Abstract
Nanoantennas enable the concentration and manipulation of light at the (sub‐)nanoscale. This ability offers novel strategies to strengthen light‐matter interactions in a controlled fashion. However, most nanoantennas are highly sensitive to light polarization and emitter orientation, which is disadvantageous for many applications (e.g., Raman and fluorescence spectroscopy depend strongly on molecular symmetry and orientation, as well as on the local optical field gradient). It is also unfortunate that analytical descriptions, essential to bridge experimental observations to knowledge and future design guidelines, have lagged behind. Here, resorting to conformal transformation, aluminum nanotripods excited by a nanoemitter of arbitrary orientation are studied analytically. Our results, corroborated with full‐wave simulations, show that aluminum nanotripods are robust not only to emitter orientation, but also to its position. Hence, this work exemplifies the effectiveness and efficiency of transformation optics to analytically describe and optimize light‐matter interaction in complex plasmonic nanoantennas.
Date Issued
2017-09-01
Date Acceptance
2017-09-01
Citation
Laser and Photonics Reviews, 2017, 11 (5)
ISSN
1863-8880
Publisher
Wiley-VCH Verlag
Journal / Book Title
Laser and Photonics Reviews
Volume
11
Issue
5
Copyright Statement
© 2017 by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is the pre-peer reviewed version of the following article, which has been published in final form at https://onlinelibrary.wiley.com/doi/full/10.1002/lpor.201700051
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000411742300004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Optics
Physics, Applied
Physics, Condensed Matter
Physics
Conformal transformation
Nanoantenna
Plasmonic
Purcell effect
Transformation optics
ENERGY-LOSS SPECTROSCOPY
PLASMONIC NANOANTENNAS
TRANSFORMATION OPTICS
ENHANCEMENT
NANOPARTICLES
GENERATION
SYMMETRY
NANOGAPS
TRIMER
Publication Status
Published
Article Number
ARTN 1700051
Date Publish Online
2017-09-12