Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Near-Infrared Super-Absorbing All-Dielectric Metasurface Based on Single-Layer Germanium Nanostructures
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics. Zhejiang Univ, Coll Opt Sci & Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China.
Zhejiang Univ, Coll Opt Sci & Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China..
Zhejiang Univ, Coll Opt Sci & Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China..
Zhejiang Univ, Coll Opt Sci & Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China..
Show others and affiliations
2018 (English)In: Laser & Photonics reviews, ISSN 1863-8880, E-ISSN 1863-8899, Vol. 12, no 9, article id 1800076Article in journal (Refereed) Published
Abstract [en]

Strong near-infrared absorption in ultrathin semiconductor layers is essential for increasing the speed and efficiency of photocarrier extraction in optoelectronic devices. However, the absorption of a free-standing ultrathin film can never exceed 50% in principle. In this article, an all-dielectric germanium metasurface absorber in the near-infrared region (800-1600 nm) is proposed theoretically and experimentally. Near-unity absorption can be achieved in such a subwavelength-thin (approximate to 0.13 lambda(0)) layer of nanostructures based on the destructive interference between simultaneously excited electric and magnetic dipoles inside each element in the backward direction in combination with the destructive interference between the scattered field and the incident field in the forward direction. Its response is both polarization-independent and angle-insensitive, with over 80% absorption at an incident angle up to 28 degrees. This ultrathin and flexible design paves the way for realizing next generation optoelectronic devices aimed for high-speed photon detection and energy harvesting.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2018. Vol. 12, no 9, article id 1800076
Keywords [en]
all-dielectric metasurfaces, germanium nanostructures, near-infrared, perfect absorption, single-layer
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-235448DOI: 10.1002/lpor.201800076ISI: 000444421000007Scopus ID: 2-s2.0-85052687260OAI: oai:DiVA.org:kth-235448DiVA, id: diva2:1251546
Note

QC 20180927

Available from: 2018-09-27 Created: 2018-09-27 Last updated: 2018-10-02Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Tian, Jingyi

Search in DiVA

By author/editor
Tian, Jingyi
By organisation
Laser Physics
In the same journal
Laser & Photonics reviews
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 72 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf