Jesper Mørk

TL;DR: In this paper, the authors present a detailed theoretical and experimental investigation of the nonlinear dynamics of a semiconductor laser with optical feedback, showing that the coherence collapsed state is a chaotic attractor and that chaos is reached for increasing feedback level through a quasi-periodic route interrupted by frequency locking.

TL;DR: Theoretical results on wave mixing in traveling-wave semiconductor laser amplifiers are presented in this article, where the authors derive equations capable of treating the range from nearly degenerate to highly nondegenerate four-wave mixing.

TL;DR: In this paper, the quantum-dot (QD) excited state carriers were found to act as a reservoir for the optically active ground state carriers resulting in an ultrafast gain recovery as long as the excited state is well populated.

TL;DR: In this article, the authors present a simple, yet powerful method for calculating nonlinear pulse propagation and pulse interaction in active semiconductor waveguides based on the density matrix equations, which under realistic operation conditions are shown to lead to an accurate description of the material gain, that includes the dynamics of carrier heating and spectral-hole burning.

TL;DR: A semi-analytical model based on the effect of coherent population oscillations and taking into account propagation effects is derived and is shown to well account for the experimental results and it is shown that the carrier lifetime limits the maximum achievable delay.