MODELING OF THE THERMAL PARAMETERS OF HIGH-POWER LINEAR LASER-DIODE ARRAYS - 2-DIMENSIONAL TRANSIENT MODEL

A two-dimensional transient thermal model of an injection laser is dev eloped. This model makes it possible to analyse the temperature profil es in pulsed and cw stripe lasers with an arbitrary width of the strip e contact, and also in linear laser-diode arrays. This can be done for any durations and repetition rates of the pump pulses. The model can also be applied to two-dimensional laser-diode arrays operating quasic ontinuously. An analysis is reported of the influence of various struc tural parameters of a diode array on the thermal regime of a single la ser. The temperature distributions along the cavity axis are investiga ted for different variants of mounting a crystal on a heat sink. It is found that the temperature drop along the cavity length in cw and qua si-cw laser diodes may exceed 20%.