A parametric study of laser induced-effects in terbium-doped borosilicate glasses: prospects for compact magneto-optic devices
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Publication Details
Output type: Journal article
Author list: Liu Q, Johnston BF, Gross S, Withford MJ, Steel MJ
Publisher: Optica
Publication year: 2013
Journal: Optical Materials Express (2159-3930)
Volume number: 3
Issue number: 12
Start page: 2096
End page: 2111
Number of pages: 16
ISSN: 2159-3930
eISSN: 2159-3930
Languages: English-Great Britain (EN-GB)
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Open access status: gold
Full text URL: https://doi.org/10.1364/ome.3.002096
Abstract
We report a study of ultrafast laser waveguide inscription in two magneto-optical glasses. Two types of femtosecond laser systems operating in kHz and MHz repetition rate regimes are used for waveguide fabrication. Single mode waveguides in the visible are obtained in both writing regimes and exhibit distinct optical properties depending on laser writing conditions and the nature of glasses. Photodarkening, produced as a fabrication byproduct and associated with waveguide propagation loss, is shown to be reversible via annealing. Photodarkening behaves differently in the magneto-optical glasses studied, most likely due to large differences in the concentration of lanthanum and/or gallium in the materials. (C) 2013 Optical Society of America
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