Investigating the Effect of Increased Heatsink Temperature and Packaging-Induced Strain in a Single Emitter Laser Using a Laser Diode Simulation/Emulation Tool

Abstract

This paper explores further the capability and versatility of Barlase in establishing deeper understanding of the behaviour of an emitter in a laser bar. The interactions between an emitter and the substrate upon which it is mounted are important in learning more about the degradation process that occurs in lasers. It is well known that various factors come into play in the operation of individual emitters and full laser bars (L-I characteristics, threshold, efficiency, etc.) but one of the most important is the effect of increased heatsink temperature and packaging-induced strain in laser bars. Barlase is therefore used to investigate these effects based on the Arrhenius equation. The relevant parameters are updated at each aging step. Barlase allows a better understanding of how current competition, temperature and the level of defects affect the output power and the degradation rate of a bar.