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Electron-phonon relaxation rates and optical gain in a quantum cascade laser in a magnetic field.
- Source :
-
Journal of Applied Physics . 5/15/2005, Vol. 97 Issue 10, p103109-1-103109-5. 5p. 6 Graphs. - Publication Year :
- 2005
-
Abstract
- We present a model for calculating the optical gain in a midinfrared GaAs/AlGaAs quantum cascade laser in a magnetic field, based on solving the set of rate equations that describe the carrier density in each level, accounting for the optical- and acoustic-phonon scattering processes. The confinement caused by the magnetic field strongly modifies the lifetimes of electrons in the excited state and results in pronounced oscillations of the optical gain as a function of the field. Numerical results are presented for the structure designed to emit at λ~11.4 μm, with the magnetic field varying in the range of 10-60 T. The effects of band nonparabolicity are also included. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 97
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 100455624
- Full Text :
- https://doi.org/10.1063/1.1904706