Multiphysics Reduced Order Modelling of a Packaged Laser Diode

Abstract

In this work a Quantum Well (QW) Laser Diode is used as a powerful light source for automotive LIDAR applications, where high power densities and short pulsations are required. Because of the extreme working conditions, a proper electrical and thermal design requires a deep understanding of the coupled electrical and thermal phenomena occurring inside the device. In this respect, multi-physics simulations are proposed in the present work as a fundamental tool to analyse the system behaviour. Because of the high computational cost of two-way coupled three-dimensional electrical and thermal FEM simulations, model order reduction is presented here as a valid alternative, providing accurate results in much shorter computational times.