TRANSIENT TEMPERATURE RESPONSE OF VERTICAL-CAVITY SURFACE-EMITTING SEMICONDUCTOR-LASERS

Transient temperature rises in vertical-cavity surface-emitting semico nductor lasers (VCSEL's) have been calculated using Green's function m ethods. The influence of current spreading, material parameters, and o perating conditions on the transient thermal response have been invest igated, The results show that current spreading plays an important rol e in the transient thermal properties of VCSEL's; under pulsed operati on the temperature profile in the active layer changes with time up to a delay of several microseconds. The calculated results are in good a greement with the measured data.