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Film-coupled log-periodic optical antennas for near-infrared light absorption
Zhejiang University.
Zhejiang University.
Zhejiang University.
Zhejiang University.
2014 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, 2014Conference paper, Published paper (Refereed)
Abstract [en]

Absorption properties of film-coupled log-periodic optical antennas in the near-infrared region are numerically investigated. The maximum absorption for TE and TM polarizations at normal incidence reach to 95% and 93%, respectively, and the optimal absorption of around 90% can be simultaneously obtained for both cases. It is shown that the main absorption peak is independent to light polarizations at normal incidence. Moreover, the log-periodic antenna-assisted absorption represents district polarization selectivity at high-order resonances. For oblique incidence, only the incident light of specific wavelengths within a narrow incidence angle can be almost entirely trapped inside the absorber, indicating special direction and wavelength selectivity of the absorber. All these features would lead to potential applications in photovoltaic technology, sensing, etc.

Place, publisher, year, edition, pages
2014.
Keyword [en]
Log-periodic nanoantennas, Optical absorber, Plasmonics, Antennas, Electromagnetic wave absorption, Infrared devices, Light absorption, Log periodic antennas, Optical instruments, Plasmons, Polarization, Absorption property, High-order resonances, Near infrared region, Optical absorbers, Photovoltaic technology, Polarization-selectivity, Wavelength Selectivity, Directive antennas
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:kth:diva-167039DOI: 10.1117/12.2075318ISI: 000349367200016Scopus ID: 2-s2.0-84922985570ISBN: 9781628413519 (print)OAI: oai:DiVA.org:kth-167039DiVA: diva2:813171
Conference
Plasmonics, 9 October 2014 through 11 October 2014
Note

QC 20150521

Available from: 2015-05-21 Created: 2015-05-21 Last updated: 2015-05-21Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • Other style
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
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  • asciidoc
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