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Assessment of optical purity in bulk transparent materials via spectrometry of filament induced luminescence (Conference Presentation)
Author(s): Balys Momgaudis; Akvile Bunkeviciute; Robertas Grigutis; Andrius Melninkaitis; Mikas Vengris

Paper Abstract

Benchmarking optical quality of transparent materials is of vital importance to high power laser optics. Herewith we propose new nondestructive technique suited to quantify atomic impurities, based on spectrometry of laser induced-filament luminescence. Various laser host materials, of different vendors (sapphire, YAG and KGW) were investigated. The intensity and decay times of luminescence indicated significant differences in impurities among samples. To validate the proposed technique, filament induced luminescence results were compared to cathodoluminescence and x-rays luminescence results. Good agreement between sources was found. Finally, the effect of impurities on optical fatigue was evaluated by laser damage testing of the samples.

Paper Details

Date Published: 26 November 2019
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Proc. SPIE 11173, Laser-induced Damage in Optical Materials 2019, 1117308 (26 November 2019); doi: 10.1117/12.2536350
Show Author Affiliations
Balys Momgaudis, Vilnius Univ. (Lithuania)
Akvile Bunkeviciute, Vilnius Univ. (Lithuania)
Robertas Grigutis, Vilnius Univ. (Lithuania)
Andrius Melninkaitis, Vilnius Univ. (Lithuania)
Mikas Vengris, Vilnius Univ. (Lithuania)


Published in SPIE Proceedings Vol. 11173:
Laser-induced Damage in Optical Materials 2019
Christopher Wren Carr; Vitaly E. Gruzdev; Detlev Ristau; Carmen S. Menoni, Editor(s)

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