J.P. van de Capelle

Longitudinal analysis of semiconductor lasers with low reflectivity facets

An analysis is made of longitudinal effects in semiconductor lasers with low facet reflectivities. For this purpose, a self-consistent model is used based on the beam propagation method, which takes into account both the lateral and longitudinal dimension. The calculations show that longitudinal effects have a significant influence on the output fields in the laser.

Local normal mode analysis index-guided AlGaAs lasers with mode filter

The mode filtering properties of index-guided lasers containing a lateral mode filter section are investigated using the beam propagation method combined with a lateral local normal mode decomposition. These structures are shown to have higher kink currents than filterless devices. Furthermore, the choice of the filter length is observed to be a tradeoff between low thresholds (short filters) and suitable far fields at the filter side (long filters).

Self-Consistent Analysis of Waveguiding in Phase-Locked Array Lasers

The coupling mechanism between active waveguides is modeled in a self-consistent way. The method is applied to a phase-locked array laser with individual stripe pumping.

Analysis of coupled active waveguides: Comparison of different modeling techniques

A self consistent model for the analysis of phase locked array lasers is proposed and a comparison is made with the more frequently used coupled mode theory. It is shown that in most cases the coupled mode solutions are in good agreement with the self-consistent solution, but in some cases care should be taken in applying the coupled mode theory and an improvement of that theory may be useful.