User login

The influence of Coulomb enhancement on the modulation properties of quantum-well lasers

Publication Type:

Journal Article


IEEE J. Quantum Electron. (USA), Volume 34, Number 2, p.318 - 24 (1998)



carrier density;many-body problems;optical modulation;quantum well lasers;


The phenomenon of Coulomb enhancement, resulting from the consideration of many-body effects, is included in a detailed calculation of the gain of a quantum-well (QW) laser, which is then used to predict the laser's modulation response. Carrier transport in the separate-confinement heterostructure is taken into account. The modulation response is compared to experimental data and to predictions from calculations using only the free-carrier gain. The comparison shows that the inclusion of Coulomb enhancement in the theoretical calculations leads to better agreement between simulated and experimental data


Coulomb enhancement;modulation properties;quantum-well lasers;many-body effects;gain;modulation response;carrier transport;separate-confinement heterostructure;free-carrier gain;InGaAs-AlGaAs SQW laser;InGaAs-AlGaAs;