title: Time-domain model of quantum-dot semiconductor optical amplifiers for wideband optical signals.
abstract: We present a novel theoretical time-domain model for a quantum dot semiconductor optical amplifier, that allows to simulate subpicosecond pulse propagation including power-based and phase-based effects. Static results including amplified spontaneous emission spectra, continuous wave amplification, and four-wave mixing experiments in addition to dynamic pump-probe simulations are presented for different injection currents. The model uses digital filters to describe the frequency dependent gain and microscopically calculated carrier-carrier scattering rates for the interband carrier dynamics. It can be used to calculate the propagation of multiple signals with different wavelengths or one wideband signal with high bitrate.
authors.affiliation: Institut für Hochfrequenz- und Halbleiter-Systemtechnologien, Technische Universität Berlin, Berlin, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Puris
authors.forename: C
authors.initials: C
authors.lastname: Schmidt-Langhorst
authors.forename: K
authors.initials: K
authors.lastname: Lüdge
authors.forename: N
authors.initials: N
authors.lastname: Majer
authors.forename: E
authors.initials: E
authors.lastname: Schöll
authors.forename: K
authors.initials: K
authors.lastname: Petermann
mesh_terms: D000669:Amplifiers, Electronic; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D008027:Light; D008962:Models, Theoretical; D045663:Quantum Dots; D012542:Scattering, Radiation; D012666:Semiconductors