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Temperature reduction in vertical-external-cavity surface-emitting-lasers (VECSEL) active region

In this paper we present results of the numerical modelling of the temperature distribution in a GaAs-based, continuously optically pumped Vertical-External-Cavity Surface-Emitting-Laser, emitting at about 980 nm. Effectiveness of different methods of the temperature reduction in the active region, such as substrate thinning and using a heat spreader, is presented and compared.