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Abstract
We report on micro-Raman facet temperature measurements carried out in asymmetrically coated high-power laser diode arrays. Facet temperatures of up to 600 °C are reproducibly found for high-power operation. The data are modeled using an approach based on the finite element method. Thus we are able to infer the power management of the device from the facet temperature data. Up to 7% of the total heat power is concentrated at the front facet. Furthermore. we determine the thermal load at the front facet versus the operation current, which is a key parameter for modeling high-power devices.
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