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Engineering and Characterization of Resonant Optical Antennas

Published online by Cambridge University Press:  17 April 2019

Matthias D. Wissert ,
Andreas W. Schell ,
Konstantin S. Ilin ,
M. Siegel ,
U. Lemmer  and
Hans-Juergen Eisler
Matthias D. Wissert
Affiliation:
Lichttechnisches Institut (LTI), DFG Heisenberg Group ‘Nanoscale Science’, Karlsruher Institut fuer Technologie, Karlsruhe, Germany
Andreas W. Schell
Affiliation:
Lichttechnisches Institut (LTI), DFG Heisenberg Group ‘Nanoscale Science’, Karlsruher Institut fuer Technologie, Karlsruhe, Germany
Konstantin S. Ilin
Affiliation:
Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut fuer Technologie, Karlsruhe, Germany
M. Siegel
Affiliation:
Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut fuer Technologie, Karlsruhe, Germany
U. Lemmer
Affiliation:
Lichttechnisches Institut (LTI), Karlsruher Institut fuer Technologie, Karlsruhe, Germany
Hans-Juergen Eisler
Affiliation:
Lichttechnisches Institut (LTI), DFG Heisenberg Group ‘Nanoscale Science’, Karlsruher Institut fuer Technologie, Karlsruhe, Germany
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Abstract

Resonant optical dipole antennas, consisting either of two arms coupled by a small gap or of a single, uncoupled arm only, are fabricated by the application of electron beam lithography and gold evaporation. Using dark-field microscopy, scattering spectra of structures with varied antenna arm length and varied gap size are obtained. The results show not only a spectral redshift for coupled structures compared to single arm structures, but also that the far-field scattering intensity is significantly higher for two arm structures with gap. In addition to the dipole structures, first fabrication results on quadrupole antennas and split-ring antennas are presented, offering novel pathways for an enhancement of the optical response function.

Keywords

nanostructureoptical propertiesAu
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1248: Symposium D – Solution Processing of Inorganic and Hybrid Materials for Electronics and Photonics , 2010 , 1248-D08-04
Copyright
Copyright © Materials Research Society 2010

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