Ultrafast pulse amplification in mode-locked vertical external-cavity surface-emitting lasers PROJECT TITLE :Ultrafast pulse amplification in mode-locked vertical external-cavity surface-emitting lasersABSTRACT:A fully microscopic several-body Maxwell–semiconductor Bloch model is used to research the influence of the non-equilibrium carrier dynamics on the short-pulse amplification in mode-locked semiconductor microlaser systems. The numerical resolution of the coupled equations permits for a self-consistent investigation of the light̵one;matter coupling dynamics, the carrier kinetics in the saturable absorber and the multiple-quantum-well gain medium, also because the modification of the light field through the heart beat-induced optical polarization. The influence of the heart beat-induced non-equilibrium modifications of the carrier distributions within the gain medium and the saturable absorber on the single-pulse amplification within the laser cavity is identified. It's shown that for the same structure, quantum wells, and gain bandwidth the non-equilibrium carrier dynamics cause two most well-liked operation regimes: one with pulses within the (sub-)100 fs-regime and one with multi-picosecond pulses. The recovery time of the saturable absorber determines in that regime the device operates. Did you like this research project? To get this research project Guidelines, Training and Code... Click Here facebook twitter google+ linkedin stumble pinterest Reducing collective quantum state rotation errors with reversible dephasing Analysis of electron capture process in charge pumping sequence using time domain measurements