Dehydroxylation of phosphate laser glass

C. B. Thorsness; Tayyab I. Suratwala; Rusty A. Steele; Jack H. Campbell; Joseph S. Hayden; S. A. Pucilowski; Koji Suzuki

doi:10.1117/12.405283

25 October 2000 Dehydroxylation of phosphate laser glass

C. B. Thorsness, Tayyab I. Suratwala, Rusty A. Steele, Jack H. Campbell, Joseph S. Hayden, S. A. Pucilowski, Koji Suzuki

Author Affiliations +

Proceedings Volume 4102, Inorganic Optical Materials II; (2000) https://doi.org/10.1117/12.405283
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Rates of dehydroxylation of two Nd-doped metaphosphate laser glasses (LG-770 and LHG-8) are measured and modeled. Glass melts ranging in size from 100 g to 2.8 kg were bubbled with O₂ containing various H₂O partial pressures (P_{H(subscript 2}O)) and with O₂/Cl₂ mixtures at temperatures ranging from 925 - 1300 degree(s)C. The OH content in the glass was measured by monitoring the OH absorption at 3.333 micrometers at various bubbling times. The OH removal by inert gas bubbling (e.g. O₂ bubbling) is governed by the transport (diffusion) of OH to the glass liquid/vapor interface and by the chemical equilibrium between OH at the surface and H₂O in the gas phase. The equilibrium OH content in glass melts bubbled with O₂ containing different P_{H(subscript 2}O) varies as P_{H(subscript 2}O)^1/2.

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C. B. Thorsness, Tayyab I. Suratwala, Rusty A. Steele, Jack H. Campbell, Joseph S. Hayden, S. A. Pucilowski, and Koji Suzuki "Dehydroxylation of phosphate laser glass", Proc. SPIE 4102, Inorganic Optical Materials II, (25 October 2000); https://doi.org/10.1117/12.405283

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