High-temperature luminescence excited by a cw Kr-ion laser beam was used as a probe to measure the temperature of CdTe inside of the laser spot. The luminescence was first studied with low-power laser excitation on externally oven-heated CdTe. The results were then used as a standard for the temperature determination during laser-beam heating. It was found that the lattice temperature can be determined very accurately from the slope on the high-energy side of the luminescence spectrum. The maximum temperature inside the laser spot was measured as a function of the laser power. The results are in good agreement with theoretical calculations of cw laser heating in CdTe.
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As et al. (1987) studied this question.
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