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Title

A highly efficient method of dehydroxylation and fining of Nd phosphate laser glasses

AuthorsMuñoz, Francisco ; Balda, Rolindes
Issue DateApr-2019
PublisherJohn Wiley & Sons
CitationInternational Journal of Applied Glass Science 10(2): 157-161 (2019)
AbstractWe describe herein a method that shows to be highly efficient in the dehydroxylation and fining process of phosphate glasses and that has been tested on the Nd‐doped 15Na2O‐15K2O‐20BaO‐50P2O5 metaphosphate composition. The method consists of a two‐step procedure: first, the batch is melted in a ceramic crucible; then, the obtained glass is re‐melted under a constant N2 flow, while being placed inside a graphite crucible with a much bigger surface area as compared to its depth. This allows the melt to be spread over the crucible area resulting in a relatively thin layer with a high area in contact with the atmosphere at the temperature of remelting. It has been demonstrated that the water content decreases with both temperature and time length and that the glass samples obtained are completely free of bubbles and stria showing very high chemical and optical homogeneity. This method employed, has been proven to be very effective, as evidenced by the great increase in the lifetime of Nd3+ luminescence––reaching a maximum of 380 μs‐which is much higher than the one measured in the untreated glass.
Publisher version (URL)http://dx.doi.org/10.1111/ijag.12974
URIhttp://hdl.handle.net/10261/203021
DOI10.1111/ijag.12974
Identifierse-issn: 2041-1294
issn: 2041-1286
Appears in Collections:(CFM) Artículos
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