Formation and Passive Q-Switch Performance of Glass-Ceramics Containing Co2+-Doped Spinel Nanocrystals

Olga Dymshits; Alexander Shashkin; Alexander A. Zhilin; Yury Volk; Alexander Malyarevich; Konstantin Yumashev

doi:10.4028/www.scientific.net/AMR.39-40.219

Paper Titles

Correlation of Surface Characteristics and Thermal Conductivity of High Silica Glass Fibre Materials
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Convolution Models for the Dielectric Function of Glass
p.199

Magnetic Properties of Amorphous Fe₂O₃-R₂O₃ (R=La, Gd and Tb) Thin Films Fabricated by Sputtering Method
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Spectral, Radiation-Optical and Shielding Properties of Phosphate Glasses with High Lead Content
p.213

Formation and Passive Q-Switch Performance of Glass-Ceramics Containing Co²⁺-Doped Spinel Nanocrystals
p.219

Influence of Technological Parameters on Nanosecond Laser-Induced Surface Damage of Optical Multimode Fibers
p.225

Luminescent ZnO-Al₂O₃-SiO₂ Glasses and Glass Ceramics
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Introduction of Silver in Poled Sodium and Niobium Borophosphate Glasses: Characterization by Electrical Transmitted Current and SHG Measurements
p.237

Thermal Stability and Optical Properties of Er³⁺ Doped BaTi₂O₅ Glasses
p.243

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Formation and Passive Q-Switch Performance of Glass-Ceramics Containing Co²⁺-Doped Spinel Nanocrystals

Abstract:

Compositions and heat treatment conditions were determined at which absorption and luminescence properties of aluminosilicate transparent glass-ceramics are defined mainly by tetrahedrally coordinated Co2+ ions located in spinel nanocrystals. Optical properties of cobaltdoped aluminosilicate transparent glass-ceramics have been studied in visible – near infrared (IR) spectral range. It was demonstrated that the concentration of tetrahedrally coordinated Co2+ ions in the spinel nanocrystals is determined by the CoO content in the initial glass and is independent of the heat-treatment schedule. Absorption saturation and bleaching relaxation under excitation of the 4A2→4T1(4F) transition of tetrahedrally coordinated Co2+ ions were studied. The value of groundstate and excited state absorption cross-sections of tetrahedrally coordinated Co2+ ions was estimated. Comparative study of output pulse parameters of Q-switched Er:glass laser using cobaltdoped glass-ceramics and Co2+:MgAl2O4 single crystal is presented.