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Author: Bandelow, Uwe × Author: Vladimirov, Andrei × End date: 2009 × Start date: 2000 × Has files: Yes × Publisher: Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik ×

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    A model for mode-locking in quantum dot lasers
    (Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik, 2006) Viktorov, Evgeny; Mandel, Paul; Vladimirov, Andrei; Bandelow, Uwe
    We propose a model for passive mode-locking in quantum dot laser and report on specific dynamical properties of the regime which is characterized by a fast gain recovery. No Q-switching instability has been found accompanying the mode-locking. Bistability can occur between the mode-locking regime and zero intensity steady state.
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    A model equation for ultrashort optical pulses
    (Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik, 2008) Amiranashvili, Shalva; Vladimirov, Andrei; Bandelow, Uwe
    The nonlinear Schrödinger equation based on the Taylor approximation of the material dispersion can become invalid for ultrashort and few-cycle optical pulses. Instead, we use a rational fit to the dispersion function such that the resonances are naturally accounted for. This approach allows us to derive a simple non-envelope model for short pulses propagating in one spatial dimension. This model is further investigated numerically and analytically.