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Transverse excitation of plasmonic slot nano-resonators embedded in gold-coated microfiber tips

Transverse excitation of plasmonic slot nano-resonators embedded in gold-coated microfiber tips
Transverse excitation of plasmonic slot nano-resonators embedded in gold-coated microfiber tips
Nanoscale aperture in thin noble-metal films, with dimensions comparable to the light wavelength, can form plasmonic nano-resonators (PNRs) and show astonishing optical properties leading to enhanced and selective light transmission and confinement. In contrast to conventional optical systems using lenses and mirrors, PNRs can provide hot spots in the near field with dimensions determined mainly by the structure size rather than by the diffraction limit. A number of different nano-structures have been considered and studied in detail for their ability to concentrate light [1]. In this paper, for the first time we study both theoretically and experimentally the transverse excitation of a strongly-coupled 3D plasmonic slot nano-resonator (PSNR) by embedding a rectangular slot nano-cavity in a plasmonic structure formed by a thin-metal-film coated microfiber tip: a schematic of the structure is shown in the inset of Fig. 1(a). Light is launched from the untapered side of the fiber and coupled to the nano-cavity. The various resonances can be identified simply monitoring the reflected light. In the experiment, a PSNR with 400 nm length, 200 nm width and 30 nm depth was inscribed on a 30 nm goldcoated microfiber tip by focused ion beam (FIB). Light with the polarization state which is perpendicular to the PSNR was launched into the tip and reflection spectra were recorded.
Ding, Ming
12b31750-03c4-4f76-aab6-64feb8f13bf0
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Brambilla, G.
815d9712-62c7-47d1-8860-9451a363a6c8
Ding, Ming
12b31750-03c4-4f76-aab6-64feb8f13bf0
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Brambilla, G.
815d9712-62c7-47d1-8860-9451a363a6c8

Ding, Ming, Zervas, M.N. and Brambilla, G. (2013) Transverse excitation of plasmonic slot nano-resonators embedded in gold-coated microfiber tips. 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, , Munich, Germany. 12 - 16 May 2013. 1 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Nanoscale aperture in thin noble-metal films, with dimensions comparable to the light wavelength, can form plasmonic nano-resonators (PNRs) and show astonishing optical properties leading to enhanced and selective light transmission and confinement. In contrast to conventional optical systems using lenses and mirrors, PNRs can provide hot spots in the near field with dimensions determined mainly by the structure size rather than by the diffraction limit. A number of different nano-structures have been considered and studied in detail for their ability to concentrate light [1]. In this paper, for the first time we study both theoretically and experimentally the transverse excitation of a strongly-coupled 3D plasmonic slot nano-resonator (PSNR) by embedding a rectangular slot nano-cavity in a plasmonic structure formed by a thin-metal-film coated microfiber tip: a schematic of the structure is shown in the inset of Fig. 1(a). Light is launched from the untapered side of the fiber and coupled to the nano-cavity. The various resonances can be identified simply monitoring the reflected light. In the experiment, a PSNR with 400 nm length, 200 nm width and 30 nm depth was inscribed on a 30 nm goldcoated microfiber tip by focused ion beam (FIB). Light with the polarization state which is perpendicular to the PSNR was launched into the tip and reflection spectra were recorded.

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e-pub ahead of print date: 2013
Venue - Dates: 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, , Munich, Germany, 2013-05-12 - 2013-05-16
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 361198
URI: http://eprints.soton.ac.uk/id/eprint/361198
PURE UUID: 5f94dd52-1e0d-4b07-a440-067ceb59303a
ORCID for M.N. Zervas: ORCID iD orcid.org/0000-0002-0651-4059
ORCID for G. Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

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Date deposited: 16 Jan 2014 11:27
Last modified: 02 Apr 2022 01:38

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Contributors

Author: Ming Ding
Author: M.N. Zervas ORCID iD
Author: G. Brambilla ORCID iD

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