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Optical Engineering

Local laser-decolorizing of gamma-ray irradiated silicate glass
Author(s): João M. Pinto Coelho; Catarina Silva; Andreia Ruivo; Maria L. Botelho; Antonio Pires de Matos
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Paper Abstract

Local decolorizing of gamma-ray irradiated silicate glasses has been studied under thermal annealing by a laser beam. The influence of the beam's exposure time was studied, showing that an increase of the glass temperature on the irradiated areas can locally induce complete decolorizing (bleaching) of glass. In this work, the heat conduction differential equation is solved by numerical approach using the finite element method and results are compared by experimental analysis. Although much work is being developed in the fields of color centers creation and its decay by heat, this work presents the first systematic study on near-infrared decolorizing of gamma-irradiated float silicate glasses.

Paper Details

Date Published: 1 June 2011
PDF: 9 pages
Opt. Eng. 50(6) 064301 doi: 10.1117/1.3591948
Published in: Optical Engineering Volume 50, Issue 6
Show Author Affiliations
João M. Pinto Coelho, Univ. de Lisboa (Portugal)
Catarina Silva, Univ. de Lisboa (Portugal)
Andreia Ruivo, Univ. Nova de Lisboa (Portugal)
Maria L. Botelho, Instituto Tecnológico e Nuclear (Portugal)
Antonio Pires de Matos, Univ. Nova de Lisboa (Portugal)


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