Antenna Structures for Optical Coupling in Quantum-Well Infrared Detectors

Abstract

Predicted performance for antenna-coupled, Quantum Well Infrared Photodetectors (QWIPs) is presented. These structures contain a patterned metal antenna layer and dielectric backplane reflector in place of the usual metal phase grating. When illuminated by normally incident plane-wave illumination, the antenna structures generate both evanescent and propagating modes that have the required polarization to be absorbed by the QW stack. An undersampled spectral technique is also demonstrated for using the Finite-Difference, Time-Domain (FDTD) technique to compute spectral quantum efficiency in a single FDTD run.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1998
Accession Number
ADA342154

Entities

People

  • Mark S. Mirotznik
  • Thomas S. Faska
  • W. Beck

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Antireflection Coatings
  • Cell Size
  • Detection
  • Detectors
  • Electric Fields
  • Electron Beam Lithography
  • Frequency
  • Gratings (Spectra)
  • Magnetic Fields
  • Materials
  • Optical Properties
  • Quantum Efficiency
  • Quantum Wells
  • Radiation
  • Reflectance
  • Spiral Antennas
  • Two Dimensional

Fields of Study

  • Materials science
  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Optical Physics and Photonics.
  • Semiconductor Device Technology

Technology Areas

  • Quantum Computing