Shevchenko, Andriy ORCID: 0000-0002-7621-2830, Kivijarvi, Ville, Grahn, Patrick, Kaivola, Matti ORCID: 0000-0001-5047-5846 and Lindfors, Klas ORCID: 0000-0002-6482-5605 (2015). Bifacial Metasurface with Quadrupole Optical Response. Phys. Rev. Appl., 4 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2331-7019

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Abstract

We design, fabricate, and characterize a metasurface, whose multipole optical response depends significantly on the illumination direction. The metasurface is composed of gold-nanodisc dimers embedded in glass. In spite of their nanoscale size, the dimers exhibit a dominating electric-current-quadrupole response in a wide range of wavelengths around 700 nm when illuminated from one side, and a primarily electric-dipole response when illuminated from the opposite side. This leads to two consequences. First, the reflection coefficient of the metasurface considerably differs for the two sides of illumination. Second, quadrupole excitation results in a significant local enhancement of both electric and magnetic fields around the dimers. Our experimental spectroscopic data are in good agreement with simulations obtained using a multipole expansion model.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Shevchenko, AndriyUNSPECIFIEDorcid.org/0000-0002-7621-2830UNSPECIFIED
Kivijarvi, VilleUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grahn, PatrickUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kaivola, MattiUNSPECIFIEDorcid.org/0000-0001-5047-5846UNSPECIFIED
Lindfors, KlasUNSPECIFIEDorcid.org/0000-0002-6482-5605UNSPECIFIED
URN: urn:nbn:de:hbz:38-396181
DOI: 10.1103/PhysRevApplied.4.024019
Journal or Publication Title: Phys. Rev. Appl.
Volume: 4
Number: 2
Date: 2015
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2331-7019
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
NEGATIVE REFRACTION; METAMATERIALS; NANOANTENNA; LIGHT; LENSMultiple languages
Physics, AppliedMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/39618

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