Abstract
The modern infrared imaging technique is applied to studies of the temperature fields and heat loads of Er:YAG laser crystals under conditions of optical pumping of these crystals with high-power (20 W) radiation from diode arrays with fiber outputs. It is shown that state-of-the-art infrared imagers operating in the range 8–14 μm can be efficiently used to monitor the near-surface temperatures in the lasing regions of solid-state lasers under high-power diode pumping. The possibilities of modern infrared imagers for evaluating the degree of heating of the lasing region in a laser crystal, the temperature distribution in this region, and the efficiency of operation of cooling systems and for preliminarily rejecting active laser elements have been demonstrated.
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Original Russian Text © V.P. Danilov, N.N. Il’ichev, V.P. Kalinushkin, M.I. Studenikin, V.A. Yur’ev, A.V. Pronin, 2010, published in Pribory i Tekhnika Eksperimenta, 2010, No. 2, pp. 131–137.
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Danilov, V.P., Il’ichev, N.N., Kalinushkin, V.P. et al. Possibilities of using modern infrared imaging devices for measuring the temperature of the lasing regions of solid-state lasers pumped with high-power laser diodes. Instrum Exp Tech 53, 278–283 (2010). https://doi.org/10.1134/S0020441210020223
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DOI: https://doi.org/10.1134/S0020441210020223