Effect of water content on neodymium-doped fluorozirconate and fluoroaluminate glasses

Alexis Gale Clare; Adam B. Schrader; Scott T. Misture; Scott Speakman; Kathleen A. Richardson

doi:10.1117/12.405284

25 October 2000 Effect of water content on neodymium-doped fluorozirconate and fluoroaluminate glasses

Alexis Gale Clare, Adam B. Schrader, Scott T. Misture, Scott Speakman, Kathleen A. Richardson

Proceedings Volume 4102, Inorganic Optical Materials II; (2000) https://doi.org/10.1117/12.405284
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Fluorozirconate and fluoroaluminate glasses doped with 0, 1.5 and 3.0 mol% NdF₃ were made under a variety of processing conditions ranging from dry (less than 5 ppm H₂O) and oxygen- free using ultra-pure raw materials to an open laboratory furnace with less pure raw materials. Even under the optimum dryness and purity conditions 20 g batches of fluoroaluminate glass could not be made crystal-free whereas fluorozirconate glass could. However a blue shift in the ⁴I_9/2-⁴I_13/2 fluorescence band was noted for the fluoroaluminate glass compared to the fluorozirconate as had been reported in other publications along with a blue shift in the same band for glasses made under drier conditions. The environment around the neodymium was examined using EXAFS with the Nd L_II edge for the glasses and dry and hydrated NdF₃. Hydrated NdF₃ has then first peak in the EXAFS Fourier transform at shorter distance with a broader FWHM. Fluoroaluminate glasses exhibited the same trends when made in more hydrated conditions. This would be consistent with at least partial coordination of the Nd by OH.

Citation Download Citation

Alexis Gale Clare, Adam B. Schrader, Scott T. Misture, Scott Speakman, and Kathleen A. Richardson "Effect of water content on neodymium-doped fluorozirconate and fluoroaluminate glasses", Proc. SPIE 4102, Inorganic Optical Materials II, (25 October 2000); https://doi.org/10.1117/12.405284

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