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      Plasmonic nanoslit array enhanced metal-semiconductor-metal optical detectors

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      Author
      Eryilmaz, S. B.
      Tidin, O.
      Okyay, Ali Kemal
      Date
      2012-01-09
      Source Title
      IEEE Photonics Technology Letters
      Print ISSN
      1041-1135
      Publisher
      Institute of Electrical and Electronics Engineers
      Volume
      24
      Issue
      7
      Pages
      548 - 550
      Language
      English
      Type
      Article
      Item Usage Stats
      133
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      113
      downloads
      Abstract
      Metallic nanoslit arrays integrated on germanium metal-semiconductor-metal photodetectors show many folds of absorption enhancement for transverse-magnetic polarization in the telecommunication C-band. Such high enhancement is attributed to resonant interference of surface plasmon modes at the metal-semiconductor interface. Horizontal surface plasmon modes were reported earlier to inhibit photodetector performance. We computationally show, however, that horizontal modes enhance the efficiency of surface devices despite reducing transmitted light in the far field.
      Keywords
      Photodetectors
      Plasmons
      Silicon germanium
      Absorption enhancement
      Far field
      Horizontal surfaces
      Metal semiconductor interface
      Metal semiconductor metal
      Metal semiconductor metal photodetector
      Metallic nanoslit arrays
      Nanoslits
      Optical detectors
      Plasmonic
      Silicon germanium
      Surface device
      Surface plasmon modes
      Transmitted light
      Germanium
      Photodetectors
      Plasmons
      Permalink
      http://hdl.handle.net/11693/21539
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/LPT.2012.2183342
      Collections
      • Department of Electrical and Electronics Engineering 3524
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
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