Non-radiative relaxation in Ta-doped silica fibres

Brocklesby, W.S., Townsend, J.E., Brinck, D.J. and Brown, R.S. (1994) Non-radiative relaxation in Ta-doped silica fibres Optical Materials, 3, (3), pp. 205-208. (doi:10.1016/0925-3467(94)90005-1).


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We describe the properties of tantalum-doped silica fibers which have been doped with thulium and produced by a normal solution doping technique. In silica fibers, non-radiative decay almost quenches luminescence from several of the Tm levels, notably the 3F4 level at 800 nm, and the 1H4 level at 2µm. The properties of these levels are a sensitive test of multiphonon decay rates in the host. We observe fluorescence decay components from these levels in Tm-doped tantalosilicate fibers which are significantly longer than those observed in Tm-doped germanosilicate or aluminosilicate fibers. This is interpreted as the formation of a low-vibrational-energy microenvironment around the rare earth.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/0925-3467(94)90005-1
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ePrint ID: 78178
Date :
Date Event
August 1994Published
Date Deposited: 11 Mar 2010
Last Modified: 18 Apr 2017 20:24
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