ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Compositions and heat treatment conditions were determined at which absorption andluminescence properties of aluminosilicate transparent glass-ceramics are defined mainly bytetrahedrally coordinated Co2+ ions located in spinel nanocrystals. Optical properties of cobaltdopedaluminosilicate transparent glass-ceramics have been studied in visible – near infrared (IR)spectral range. It was demonstrated that the concentration of tetrahedrally coordinated Co2+ ions inthe spinel nanocrystals is determined by the CoO content in the initial glass and is independent ofthe heat-treatment schedule. Absorption saturation and bleaching relaxation under excitation of the4A2→4T1(4F) transition of tetrahedrally coordinated Co2+ ions were studied. The value of groundstateand excited state absorption cross-sections of tetrahedrally coordinated Co2+ ions wasestimated. Comparative study of output pulse parameters of Q-switched Er:glass laser using cobaltdopedglass-ceramics and Co2+:MgAl2O4 single crystal is presented
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.39-40.219.pdf
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