Many-body effects on the linewidth enhancement factor in quantum well lasers

Journal Article · Sun Jan 27 23:00:00 EST 1991 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.104676· OSTI ID:6267429

Chow, W W ^[1]; Koch, S W ^[2]; Sargent, M III ^[3]; Ell, C ^[4]

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1. Division 2531, Sandia National Laboratories, Albuquerque, NM (USA)
2. Optical Sciences Center and Department of Physics, University of Arizona, Tucson, AZ (USA)
3. Optical Sciences Center, University of Arizona, Tucson, AZ (USA)
4. Institut fuer Theoretische Physik, Universitaet Frankfurt, Frankfurt (Germany)

A many-body theory that includes band-gap renormalization, plasma screening, and interband Coulomb effects is used to calculate the linewidth enhancement factor {alpha} in quantum well lasers. We find significant variations in {alpha} with carrier density, suggesting that improvements in the laser linewidth and reduction in filamentation effects are possible for some laser configurations.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6267429
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 58:4; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AMPLIFICATION
CARRIER DENSITY
COMPUTER CALCULATIONS
COULOMB FIELD
DESIGN
ELECTRIC FIELDS
GAIN
LASERS
LINE WIDTHS
MANY-BODY PROBLEM
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS