Abstract
We present a theory for intersubband lasers, based on the solution of the Maxwell-semiconductor Bloch equations for the laser field and active medium. The collision contributions are treated within the relaxation rate approximation, where the relaxation rates are determined by microscopic scattering calculations. The theory is suitable for investigating steady-state as well as dynamical laser characteristics. As examples of applications of the theory, we examine the thermal dependence of the laser output versus current density curve and the response to modulation of the injection current, for a three-subband laser. The influence of the nonparabolicity of the conduction band and Hartree-Fock manybody effects are investigated.
Original language | English (US) |
---|---|
Article number | 01597416 |
Pages (from-to) | 292-301 |
Number of pages | 10 |
Journal | IEEE Journal of Quantum Electronics |
Volume | 42 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2006 |
Externally published | Yes |
Keywords
- Intersubband semiconductor laser
- Microscopic scattering
- Nonequilibrium laser dynamics
- Relaxation rate approximation
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering