Magnetically tuned wide-band quantum well infrared photodetectors
- Phillips Laboratory (PL/VTMR), 3550 Aberdeen Avenue Southeast, Building 426, Kirtland Air Force Base, New Mexico87117 (United States)
- Sandia National Laboratories, Albuquerque, New Mexico87185 (United States)
The electron eigenstates of double quantum well system in an in-plane magnetic field are calculated {ital 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 {ital 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 photodetector by applying an in-plane magnetic field.
- OSTI ID:
- 625379
- Journal Information:
- Journal of Applied Physics, Vol. 83, Issue 8; Other Information: PBD: Apr 1998
- Country of Publication:
- United States
- Language:
- English
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