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Autor(en) / Beteiligte
Titel
Rotated fourfold U-shape metasurface for polarization-insensitive strong enhancement of mid-infrared photodetection
Ist Teil von
  • Optics express, 2020-02, Vol.28 (3), p.4225-4233
Ort / Verlag
United States
Erscheinungsjahr
2020
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
  • Metasurface with thin planar resonant elements offers great capability in manipulating electromagnetic waves and their interaction with semiconductors. Split-ring resonator (SRR), as the basic building block, has been extensively investigated for myriad applications owing to its multiple electric and magnetic resonant modes. In this work, we report a rotated fourfold U-shape SRR metasurface for polarization-insensitive strong enhancement of mid-infrared photodetection. The integrated photodetector consists of a rotated fourfold SRR array and an InAsSb based heterojunction photodiode. A photosensitivity enhancement factor as high as 11 has been achieved by adoption of superimposed high order magnetic and electric resonant modes in the SRR metasurface. This work provides a promising pathway for exploring high performance polarization-insensitive photodetection in different electromagnetic wave ranges.
Sprache
Englisch
Identifikatoren
ISSN: 1094-4087
eISSN: 1094-4087
DOI: 10.1364/OE.383678
Titel-ID: cdi_proquest_miscellaneous_2370533712
Format

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