Abstract
Many-body Coulomb effects influence the operation of quantum-well (QW) laser diode (LD) strongly. In the present work, we study a two-band electron-hole plasma (EHP) within the Hatree-Fock approximation and the single plasmon pole approximation for static screening. Full inclusion of momentum dependence in the many-body effects is considered. An empirical expression for carrier density dependence of the bandgap renormalization (BGR) in an 8 nm GaAs/Al 0.3Ga 0.7As single QW will be given, which demonstrates a non-universal scaling behavior for quasi-two-dimension structures, due to size-dependent efficiency of screening. In addition, effective mass renormalization (EMR) due to momentum-dependent self-energy many-body correction, for both electrons and holes, is studied and serves as another manifestation of the many-body effects. Finally, the effects on carrier density dependence of the alpha factor is evaluated to assess the sensitivity of the full inclusion of momentum dependence.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Publisher | Society of Photo-Optical Instrumentation Engineers |
| Volume | 3944 |
| State | Published - 2000 |
| Externally published | Yes |
| Event | Physics and Simulation of Optoelectronic Devices VIII - San Jose, CA, USA Duration: Jan 24 2000 → Jan 28 2000 |
Other
| Other | Physics and Simulation of Optoelectronic Devices VIII |
|---|---|
| City | San Jose, CA, USA |
| Period | 1/24/00 → 1/28/00 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics