Simulation of the mode dynamics in broad ridge laser diodes

Broad-ridge laser diodes exhibit rich lateral mode dynamics in addition to longitudinal mode dynamics observed in narrow-ridge laser diodes. To simulate mode dynamics in these diodes, an effective mode interaction term is derived from the bandstructure and carrier scattering in the quantum well. The spatial dependency of pump current densities plays a crucial role in lateral mode dynamics, and thus, a Drift-Diffusion model is employed to calculate the current densities with an additional capturing term.