Abstract
Nd3+-doped phosphate laser glass with the composition of 64P205-5.9A12O3-7.1K2O-19BaO-4.0Nd203(Wt%)was prepared by means of reaction atmosphere dehydration process.The dehydration efficiencies of O2+POCl3and O2+SOCl2were studied,and the influence of identical dehydrator on the fluorescence lifetime of the prepared Nd3+-doped phosphate laser glass with different dehydration time,dehydration temperature and bubbling flux were also analyzed.The results showed that the dehydration efficiency of POCl3overmatches SOCl2;the dehydration rate is the fastest at the initial bubbling stage,dehydration temperature raising benefits eliminating moisture;but it′s more appropriate to dehydrate under 1 200℃due to influence from smelting equipment and process;prolonging the dehydration time and increasing the bubbling flux are beneficial to improving dehydration efficiency;dehydration efficiency of glass is mainly influenced by the interface reaction between OH and dehydrator;fluorescence lifetime is increased with the extension of the dehydrate time and it tends to a stable valve finally;there is an optimum value for bubbling flux that is 0.8litres every minute in the experiment.
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