Magnetically Tuned Wide-Band Quantum Well Infrared Photodetectors

Abstract

The electron eigenstates of double quantum well system in an in-plane magnetic field are calculated accurately using the density-functional theory, which includes the Coulomb interaction between electrons. The absorption coefficient as a function of the probe photon energy is further calculated using the self-consistent-field theory, which takes into account many-body effects on the optical intersubband transitions. The dependence of the absorption spectra on the magnetic field, temperature, electron density, well and middle-barrier widths, quantum-well symmetry, and electric field has been studied extensively. It provides an unconventional approach for designing a tunable wide-band quantum well infrared photodetectors by applying an in-plane magnetic field.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 08, 1998
Accession Number
ADA408661

Entities

People

  • Danhong Huang
  • S. K. Lyo

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Absorption Spectra
  • Coefficients
  • Density Functional Theory
  • Detectors
  • Electric Fields
  • Electron Density
  • Electrons
  • Energy Levels
  • Magnetic Fields
  • Optical Absorption
  • Photodetectors
  • Quantum Wells
  • Spectra
  • Symmetry
  • Two Dimensional

Fields of Study

  • Materials science
  • Physics

Readers

  • Quantum Chemistry
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics
  • Quantum Computing
  • Quantum Science - Quantum Dots