The effect of thermal annealing on luminescence centres in Ge-silica fibres


Kirsh, Y., Townsend, P.D. and Townsend, J.E. (1992) The effect of thermal annealing on luminescence centres in Ge-silica fibres. Journal of Thermal Analysis and Calorimetry, 37, (6), 1153-1160. (doi:10.1007/BF01913851).

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Description/Abstract

The radioluminescence spectrum of Ge-silica fibres doped with Nd is found to change by the effect of pre-irradiation and thermal annealing. Originally the spectrum consists of a gaussian band centred near 3.1 eV (400 nm). Following the irradiation and heating an additional asymmetric band appears near 2.4 eV (520 nm). On top of this band there is a line spectrum, which can be ascribed to internal transitions of the Nd3+. On the basis of the spectroscopic data and previous results of thermoluminescence measurements, a model is suggested for the luminescence and the effect of the thermal annealing. The blue and green bands are ascribed to an O2' molecular ion and a hole centre near the Nd3+ ion, respectively.

Item Type: Article
ISSNs: 1388-6150 (print)
1572-8943 (electronic)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 78386
Date Deposited: 11 Mar 2010
Last Modified: 27 Mar 2014 18:58
URI: http://eprints.soton.ac.uk/id/eprint/78386

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