Many-body effects on the linewidth enhancement factor in quantum well lasers
- 28 January 1991
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 58 (4) , 328-330
- https://doi.org/10.1063/1.104676
Abstract
A many-body theory that includes band-gap renormalization, plasma screening, and interband Coulomb effects is used to calculate the linewidth enhancement factor α in quantum well lasers. We find significant variations in α with carrier density, suggesting that improvements in the laser linewidth and reduction in filamentation effects are possible for some laser configurations.Keywords
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