19 November 2003 Novel approach to fabrication of highly doped nanporous glasses
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Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.525531
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy
Abstract
The possibility of efficient modification of nanoporous glasses by supercritical fluid (SCF) impregnation of erbium and copper organometallics to pores and subsequent thermal annealing of glass is shown. Experiments demonstrate unambiguously the advantage of SCF impregnation approach over liquid impregnation -- much higher rate of impregnation and absence of residual solvents: supercritical fluid -- sc-CO2-releases through pores. It was shown by monitoring Stark structure of Er3+ absorption bands and ESR spectra of CU2+ in glasses impregnated with Er and Cu organometallics that erbium and copper randomly built in network of glass. The maximal concentrations of Er3+ in nanoporous glass after SCF impregnation and subsequent annealing were estimated: 6x1020 cm-3 and 2x1020 cm-3 accordingly.
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Nodar V. Bagratashvili, Vladimir K. Popov, Svetlana I. Tsypina, Alexey O. Rybaltovski, Pavel V. Chernov, "Novel approach to fabrication of highly doped nanporous glasses", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.525531; https://doi.org/10.1117/12.525531
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