Optically stimulated luminescence of alexandrite

We report the optically stimulated luminescence (OSL) of natural alexandrite (BeAl2O4:Cr3+) from Brazil. Luminescence was stimulated using 470 nm blue, 525 nm green and 850 nm infrared light. The dose-response of the OSL is linear in all cases, a desirable feature of dosimetry applications. The infl...

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Bibliographic Details
Published in:Optical materials. X 2024-05, Vol.22, p.100325, Article 100325
Main Authors: Nunes, Matheus C.S., Trindade, Neilo M., Yoshimura, Elisabeth M., Chithambo, Makaiko L.
Format: Article
Language:English
Subjects:
Alexandrite
Dosimetry
Ionizing radiation
Light-emitting diodes
Optically stimulated luminescence
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Summary:We report the optically stimulated luminescence (OSL) of natural alexandrite (BeAl2O4:Cr3+) from Brazil. Luminescence was stimulated using 470 nm blue, 525 nm green and 850 nm infrared light. The dose-response of the OSL is linear in all cases, a desirable feature of dosimetry applications. The influence of preheating on OSL suggests that electron traps associated with the thermoluminescence of alexandrite contribute to the OSL. Mechanisms responsible for luminescence in alexandrite have been briefly considered. •Optically Stimulated luminescence (OSL) of alexandrite (BeAl2O4:Cr3+) from Brazil was investigated.•The samples demonstrated results for three different stimuli: 470 nm blue, 525 nm - green and 850 nm – infrared light.•It was possible to describe the OSL curves with 3 components: fast (C1), medium (C2) and slow (C3).•The charge traps related to the thermoluminescence (TL) signal of the sample are optically active.
ISSN:2590-1478
2590-1478
DOI:10.1016/j.omx.2024.100325