Title :
Simple Thermal Model for Vertical-Cavity, Surface-Emitting Lasers
Author :
O´Brien, C.J. ; Majewski, M.L. ; Rakic, A.D.
Author_Institution :
Sch. of Inf. Technol. & Electr. Eng., Queensland Univ., Brisbane, Qld.
Abstract :
A simple, multi-mode, rate equation based thermal model has been developed for vertical-cavity, surface-emitting lasers. The misalignment between cavity supported modes and the material gain peak is considered to be the primary cause of the higher order transverse modes and power rolloff observed in these devices. Experiments are performed on a Mode 8085-2008 VCSEL to determine its modal composition over a range of currents and temperatures. The rate equation model was fitted to these modally resolved light current curves with good success
Keywords :
laser cavity resonators; laser modes; semiconductor lasers; surface emitting lasers; thermo-optical effects; Mode 8085-2008 VCSEL; cavity supported modes; light current curves; material gain peak; modal composition; modal resolution; multimode laser; optical misalignment; power rolloff; rate equation; rate equation model; surface-emitting lasers; thermal model; transverse modes; vertical-cavity lasers; Charge carrier density; Equations; Laser modes; Optical materials; Power system modeling; Resonance; Surface emitting lasers; Temperature distribution; Threshold current; Vertical cavity surface emitting lasers;
Conference_Titel :
Optoelectronic and Microelectronic Materials and Devices, 2004 Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-8820-8
DOI :
10.1109/COMMAD.2004.1577534
