Time scales and relaxation dynamics in quantum-dot lasers

Journal Article · Wed Aug 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.023819· OSTI ID:21016044

Erneux, Thomas; Viktorov, Evgeny A; Mandel, Paul ^[1]

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1. Universite Libre de Bruxelles, Optique Nonlineaire Theorique, Campus Plaine, Code Postal 231, 1050 Brussels (Belgium)

We analyze a three-variable rate equation model that takes into account carrier capture and Pauli blocking in quantum dot semiconductor lasers. The exponential decay of the relaxation oscillations is analyzed from the linearized equations in terms of three key parameters that control the time scales of the laser. Depending on their relative values, we determine two distinct two-variable reductions of the rate equations in the limit of large capture rates. The first case leads to the rate equations for quantum well lasers, exhibiting relaxation oscillations dynamics. The second case corresponds to dots nearly saturated by the carriers and is characterized by the absence of relaxation oscillations.

• OSTI ID: 21016044
• Journal Information: Physical Review. A, Vol. 76, Issue 2; Other Information: DOI: 10.1103/PhysRevA.76.023819; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CAPTURE
CHANNELING
EQUATIONS
OSCILLATIONS
QUANTUM DOTS
QUANTUM WELLS
REACTION KINETICS
RELAXATION
SEMICONDUCTOR LASERS