Title :
Self-consistent electro-thermal-optical simulation of thermal blooming in broad-area lasers
Author_Institution :
NUSOD Inst. LLC, Newark, DE, USA
Abstract :
High-power broad-area laser diodes often suffer from a widening of the lateral far-field with increasing current, called thermal blooming. This effect is mainly caused by the non-uniform self-heating of the laser and it has been studied for several decades. For the first time, this paper presents a self-consistent electro-thermal-optical simulation of thermal blooming, including all relevant physical mechanisms. The results are in good agreement with previous measurements and reveal the blooming mechanism in detail. Common mistakes in the experimental determination of the internal temperature rise are also discussed.
Keywords :
electro-optical effects; semiconductor lasers; thermal blooming; thermo-optical effects; high-power broad-area laser diodes; internal temperature; nonuniform self-heating; physical mechanisms; self-consistent electrothermal-optical simulation; thermal blooming; Cogeneration; Laser modes; Power lasers; Semiconductor lasers; Temperature measurement; Thermal lensing;
Conference_Titel :
Numerical Simulation of Optoelectronic Devices (NUSOD), 2012 12th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4673-1602-6
DOI :
10.1109/NUSOD.2012.6316546