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Opt Express. 2009 Aug 31;17(18):15578-84. doi: 10.1364/OE.17.015578.

Index matching between passive and active tellurite glasses for use in microstructured fiber lasers: erbium doped lanthanum-tellurite glass.

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  • 1Centre of Expertise in Photonics, School of Chemistry & Physics, University of Adelaide, Adelaide, SA 5005, Australia.


Active and passive variants of La-containing tellurite glasses have been developed with matched refractive indices. The consequences of adding lanthanum to the glass was studied through measurements of the crystallization stability, glass viscosity and the loss of unstructured fibers. Doping the glass with erbium allowed for any spectroscopic changes to be observed through measurements of the absorption and energy level lifetimes. The fluorescence emission spectra were measured at 1.5 microm and, to the best of our knowledge, for the first time in tellurite glass at 2.7 microm.

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