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Temperature Efficiency Variations of Erbium Glass Lasers.

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Abstract

Influence of enhanced temperature on the laser efficiency of ytterbium-erbium phosphate glasses additionally sensitized by chromium and neodymium ions has been investigated. It was found out that temperature effects in the range from room temperature to 200°C for chromium-free glasses are small. The efficiency decrease for chromium-containing glasses was found out to be connected with temperature decrease of Cr3+ - Yb3+ energy transfer yield and with the temperature increase of losses due to radiationless energy transfer from ytterbium to divalent chromium.

© 1998 Optical Society of America

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