Plasmonic interference modulation for broadband nanofocusing

Metallic plasmonic probes have been successfully applied in near-field imaging, nanolithography, and Raman enhanced spectroscopy because of their ability to squeeze light into nanoscale and provide significant electric field enhancement. Most of these probes rely on nanometric alignment of incident...

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Autores principales:	Li Shaobo, Yang Shuming, Wang Fei, Liu Qiang, Cheng Biyao, Rosenwaks Yossi
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	asymmetric slits broadband nanofocusing circumference interference plasmonic modulation polarization rotation Physics QC1-999
Acceso en línea:	https://doaj.org/article/1cd5cfd9512e4cec90a56f90bfd50369
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id	oai:doaj.org-article:1cd5cfd9512e4cec90a56f90bfd50369
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spelling	oai:doaj.org-article:1cd5cfd9512e4cec90a56f90bfd503692021-12-05T14:10:56ZPlasmonic interference modulation for broadband nanofocusing2192-861410.1515/nanoph-2021-0405https://doaj.org/article/1cd5cfd9512e4cec90a56f90bfd503692021-10-01T00:00:00Zhttps://doi.org/10.1515/nanoph-2021-0405https://doaj.org/toc/2192-8614Metallic plasmonic probes have been successfully applied in near-field imaging, nanolithography, and Raman enhanced spectroscopy because of their ability to squeeze light into nanoscale and provide significant electric field enhancement. Most of these probes rely on nanometric alignment of incident beam and resonant structures with limited spectral bandwidth. This paper proposes and experimentally demonstrates an asymmetric fiber tip for broadband interference nanofocusing within its full optical wavelengths (500–800 nm) at the nanotip with 10 nm apex. The asymmetric geometry consisting of two semicircular slits rotates plasmonic polarization and converts the linearly polarized plasmonic mode to the radially polarized plasmonic mode when the linearly polarized beam couples to the optical fiber. The three-dimensional plasmonic modulation induces circumference interference and nanofocus of surface plasmons, which is significantly different from the nanofocusing through plasmon propagation and plasmon evolution. The plasmonic interference modulation provides fundamental insights into the plasmon engineering and has important applications in plasmon nanophotonic technologies.Li ShaoboYang ShumingWang FeiLiu QiangCheng BiyaoRosenwaks YossiDe Gruyterarticleasymmetric slitsbroadband nanofocusingcircumference interferenceplasmonic modulationpolarization rotationPhysicsQC1-999ENNanophotonics, Vol 10, Iss 16, Pp 4113-4123 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	asymmetric slits broadband nanofocusing circumference interference plasmonic modulation polarization rotation Physics QC1-999
spellingShingle	asymmetric slits broadband nanofocusing circumference interference plasmonic modulation polarization rotation Physics QC1-999 Li Shaobo Yang Shuming Wang Fei Liu Qiang Cheng Biyao Rosenwaks Yossi Plasmonic interference modulation for broadband nanofocusing
description	Metallic plasmonic probes have been successfully applied in near-field imaging, nanolithography, and Raman enhanced spectroscopy because of their ability to squeeze light into nanoscale and provide significant electric field enhancement. Most of these probes rely on nanometric alignment of incident beam and resonant structures with limited spectral bandwidth. This paper proposes and experimentally demonstrates an asymmetric fiber tip for broadband interference nanofocusing within its full optical wavelengths (500–800 nm) at the nanotip with 10 nm apex. The asymmetric geometry consisting of two semicircular slits rotates plasmonic polarization and converts the linearly polarized plasmonic mode to the radially polarized plasmonic mode when the linearly polarized beam couples to the optical fiber. The three-dimensional plasmonic modulation induces circumference interference and nanofocus of surface plasmons, which is significantly different from the nanofocusing through plasmon propagation and plasmon evolution. The plasmonic interference modulation provides fundamental insights into the plasmon engineering and has important applications in plasmon nanophotonic technologies.
format	article
author	Li Shaobo Yang Shuming Wang Fei Liu Qiang Cheng Biyao Rosenwaks Yossi
author_facet	Li Shaobo Yang Shuming Wang Fei Liu Qiang Cheng Biyao Rosenwaks Yossi
author_sort	Li Shaobo
title	Plasmonic interference modulation for broadband nanofocusing
title_short	Plasmonic interference modulation for broadband nanofocusing
title_full	Plasmonic interference modulation for broadband nanofocusing
title_fullStr	Plasmonic interference modulation for broadband nanofocusing
title_full_unstemmed	Plasmonic interference modulation for broadband nanofocusing
title_sort	plasmonic interference modulation for broadband nanofocusing
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/1cd5cfd9512e4cec90a56f90bfd50369
work_keys_str_mv	AT lishaobo plasmonicinterferencemodulationforbroadbandnanofocusing AT yangshuming plasmonicinterferencemodulationforbroadbandnanofocusing AT wangfei plasmonicinterferencemodulationforbroadbandnanofocusing AT liuqiang plasmonicinterferencemodulationforbroadbandnanofocusing AT chengbiyao plasmonicinterferencemodulationforbroadbandnanofocusing AT rosenwaksyossi plasmonicinterferencemodulationforbroadbandnanofocusing
_version_	1718371587750625280

Plasmonic interference modulation for broadband nanofocusing

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