Voltage-Controlled Tunable GaAs/AlGaAs Multistack Quantum Well Infrared Detector

Abstract

We describe a new type of intersubband GaAs/AlGaAs infrared detector consisting of three stacks of quantum wells; the quantum wells in a given stack-are identical, but are different from stack to stack. Each stack is designed to yield an absorption and a photoresponse at a different peak wavelength. The resulting device is an infrared detector which can operate in a number of modes. Among the features of this device are a wide-band detection domain, a tunable response and excellent responsivities and noise figures. The tunable operation includes a sharp peak-switching response which follows the formation, expansion, and readjustment of electric field domains within the multiquantum well region.

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Document Details

Document Type
Technical Report
Publication Date
May 11, 1992
Accession Number
ADA459962

Entities

People

  • A. Shakouri
  • A. Yariv
  • I. Grave
  • N. Kuze

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Absorption Spectra
  • Detection
  • Detectors
  • Electric Fields
  • Ground State
  • Infrared Detectors
  • Infrared Spectrometers
  • Jet Propulsion
  • Measurement
  • Quantum Wells
  • Spectrometers
  • Switching
  • Voltage

Fields of Study

  • Materials science

Readers

  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Semiconductor Device Technology

Technology Areas

  • Quantum Computing