Influence of driving conditions on the stability of ZnSe-based cw-laser diodes

ZnSe-based laser diodes grown by molecular beam epitaxy are tested under various current driving conditions. We found that the driving conditions do not influence the degradation process itself. Lifetime measurements show no dependence on the pulse width of the applied current, whereas the duty cycl...

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Bibliographic Details
Published in:Journal of crystal growth 2000-06, Vol.214, p.1040-1044
Main Authors: Klude, M, Fehrer, M, Großmann, V, Hommel, D
Format: Article
Language:English
Subjects:
cw-Operation
Degradation
Laser diodes
Pulsed operation
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Summary:ZnSe-based laser diodes grown by molecular beam epitaxy are tested under various current driving conditions. We found that the driving conditions do not influence the degradation process itself. Lifetime measurements show no dependence on the pulse width of the applied current, whereas the duty cycle has a strong influence on the lifetime. This indicates that heat is one of the driving forces of the degradation process. It is found that stable high-power pulsed operation can be maintained over a long time when the delay between the current pulses is long enough. In pulsed mode light pulses with 128 mW and in continous wave (cw)-mode an output power of more than 37 mW have been obtained.
ISSN:0022-0248
1873-5002
DOI:10.1016/S0022-0248(00)00270-0