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We report a high-power fundamental transverse mode operation of an optically pumped 920-nm vertical-external- cavity surface-emitting laser. The effects of the gain related structural parameters on the laser performance are investigated. Based on the optimization of the gain structure and the thermal management, a maximum pump-limited output power of 12 W in a TEM00mode with a slope efficiency of 58% (input power of 24 W) was achieved at room temperature.
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Kim et al. (2007) studied this question.
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