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Proceedings Paper

Influence of non-equilibrium carrier dynamics on pulse amplification in semiconductor gain media
Author(s): C. N. Böttge; J. Hader; I. Kilen; S. W. Koch; J. V. Moloney
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Paper Abstract

The influence of non-equilibrium carrier dynamics on pulse propagation through inverted semiconductor gain media is investigated. For this purpose, a fully microscopic many-body model is coupled to a Maxwell solver, allowing for a self-consistent investigation of the light–matter-coupling and carrier dynamics, the optical response of the laser and absorber in the multiple-quantum-well medium, and the modification of the light field through the resulting optical polarization. The influence of the intra-pulse dynamics on the magnitude and spectral dependence of pulse amplification for single pulses passing through inverted quantum-well media is identified. In this connection, the pulse-induced non-equilibrium deviations of the carrier distributions, the kinetic-hole filling kinetics in the gain medium, and the saturable-absorber-relaxation dynamics are scrutinized. While pulses shorter than about 100 fs are found to be rather unaffected by the carrier-relaxation dynamics, the pump-related dynamics become prominent for pulses in the multi-picosecond range leading to significant amplification.

Paper Details

Date Published: 4 March 2015
PDF: 12 pages
Proc. SPIE 9349, Vertical External Cavity Surface Emitting Lasers (VECSELs) V, 934903 (4 March 2015); doi: 10.1117/12.2080140
Show Author Affiliations
C. N. Böttge, College of Optical Sciences, The Univ. of Arizona (United States)
J. Hader, College of Optical Sciences, The Univ. of Arizona (United States)
I. Kilen, The Univ. of Arizona (United States)
S. W. Koch, College of Optical Sciences, The Univ. of Arizona (United States)
Philipps-Univ. Marburg (Germany)
J. V. Moloney, College of Optical Sciences, The Univ. of Arizona (United States)
The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 9349:
Vertical External Cavity Surface Emitting Lasers (VECSELs) V
Mircea Guina, Editor(s)

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