We combine the results of full many-body band-structure calculations of the semiconductor optical response and a full space–time-resolved laser propagation model. Two quantum-well structures are chosen, one showing a sharp increase of the linewidth enhancement factor with density; the other, a clamping of this factor with increasing density. The average far-field broadening of two weakly turbulent broad-area high-power semiconductor lasers is shown to be quite different for the two structures.
© 1999 Optical Society of America
(130.0250) Integrated optics : Optoelectronics
(140.2020) Lasers and laser optics : Diode lasers
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3380) Lasers and laser optics : Laser materials
(140.3430) Lasers and laser optics : Laser theory
J. V. Moloney, R. A. Indik, J. Hader, and S. W. Koch, "Modeling semiconductor amplifiers and lasers: from microscopic physics to device simulation," J. Opt. Soc. Am. B 16, 2023-2029 (1999)