Abstract
In recent years, vertical cavity surface emitting lasers (VCSEL) have developed into an important semiconductor laser source in multiple applications. However, the limited output power of VCSEL systems restrains industrial applications. The vertical external cavity surface emitting laser (VECSEL) design overcomes this limitation by replacing the upper distributed bragg reflector by an external parabolic mirror. Nevertheless, heating of the active region and related phenomena as e.g. the thermal rollover arise and turn out to be the major problem for further enhancement of VECSEL output power [1]. Those phenomena contain new challenges for the theoretical description.
© 2007 IEEE
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