Abstract

Thermal stability and 2-<i>µ</i>m fluorescence of high and low Al(PO<sub>3</sub>)<sub>3</sub> content of fluorophosphate glasses are investigated. Thermal stability of high Al(PO<sub>3</sub>)<sub>3</sub> content of fluorophosphate glass is better than low Al(PO<sub>3</sub>)<sub>3</sub> content of fluorophosphate glass. However, 2.04-<i>µ</i>m fluorescence intensity of high Al(PO<sub>3</sub>)<sub>3</sub> content of fluorophosphate glass is only 48.2, lower than low Al(PO<sub>3</sub>)<sub>3</sub> content of fluorophosphate glass. Raman spectroscopy is employed to investigate the difference in thermal stability and 2-<i>µ</i>m fluorescence. Moreover, fluorescence peak intensity ratios of 2.04 to 1.81 <i>µ</i>m and 2.04 to 1.57 <i>µ</i>m are calculated, which indicate that Er-Tm-Ho doped fluorophosphate glasses are suitable materials in 2-<i>µ</i>m applications.

© 2009 Chinese Optics Letters

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