Stimulated emission of Co2+-doped glass–ceramics |
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| Affiliation: | 1. Institute for Optical Materials and Technologies, Belarus National Technical University, bldg. 17, #65 Nezavisimosti Ave., 220013 Minsk, Belarus;2. Research and Technological Institute of Optical Materials Science, Saint-Petersburg 192171, Russia |
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| Abstract: | Pump–probe spectroscopy studies on cobalt-doped spinel-based aluminosilicate glass–ceramics of various compositions have been made in the visible part of the spectrum. Stimulated emission from the 4T1(4P) state to the 4A2 one of tetrahedral Co2+ ion has been observed for all glass–ceramic materials. The peak values of effective stimulated emission cross-sections for Co2+ ions are estimated to be 4–5 × 10−19 cm2 depending on glass–ceramics composition and are found to be higher than in spinel single crystals. |
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