Abstract
Injection pumping of quantum-well (QW) lasers can lead to charging of the active region due to the different electron and hole masses. To investigate the significance and physical consequences of this effect, the consequences of electrical pumping and the associated charging phenomena are investigated microscopically. The analysis reveals the necessity to include the extended barrier states energetically above the band edge in addition to the quantum-confined well states. It is shown that the barrier-state populations compensate the QW charging. The replenishing of stimulated carrier recombination under CW laser operation causes persistent charge oscillations at the plasma frequency.
Original language | English (US) |
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Pages (from-to) | 1024-1032 |
Number of pages | 9 |
Journal | IEEE Journal of Quantum Electronics |
Volume | 45 |
Issue number | 8 |
DOIs | |
State | Published - Dec 1 2009 |
Keywords
- Charge carrier processes
- Plasma oscillations
- Quantum well lasers
- Semiconductor device modeling
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering