Multi-Band GaAs/AlGaAs Quantum Well Infrared Photodetector (QWIP) Focal Plane Arrays

Abstract

The GaAs/AlGaAs based Quantum Well Infrared Photodetectors (QWIPs) afford greater flexibility than the usual extrinsically doped semiconductor IR detectors because the wavelength of the peak response and cutoff can be continuously tailored over any wavelength between 6-20 micrometers. The spectral band width of these detectors can be tuned from narrow (DELTAlamba/lamba ^ 10 %) to wide (DELTAlamba/lamba ^ 50 %) allowing various applications. Also, QWIP offers multi-color infrared cameras which is capable of simultaneously acquiring images in different infrared bands. Each pixel of such array consists of vertically stacked, independently readable, QWIP detectors sensitive in different narrow infrared bands. In this article, we discuss the development and results of the 640x512 dual-band and four-band QWIP FPAs.

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Document Details

Document Type
Technical Report
Publication Date
Jul 29, 2002
Accession Number
ADA408864

Entities

People

  • C. A. Shott
  • J. K. Liu
  • S. B. Rafol
  • S. D. Gunapala
  • S. V. Bandara

Organizations

  • Jet Propulsion Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Data Acquisition
  • Detectors
  • Diagrams
  • Digital Data
  • Energy Bands
  • Focal Plane Arrays
  • Focal Planes
  • Image Processing
  • Infrared Detectors
  • Jet Propulsion
  • Long Wavelengths
  • Materials
  • Quantum Efficiency
  • Quantum Wells
  • Spectra
  • Two Dimensional
  • Video Images

Fields of Study

  • Materials science

Readers

  • Image Processing and Computer Vision.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Quantum Computing