Broadband Infrared Luminescence of Ni2+ in Petalite-Type Transparent Glass Ceramics
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摘要:
Transparent Ni2+-doped magnesium aluminosilicate glass ceramics are prepared.The formation of petalite-type crystallites in the glass ceramics is confirmed by x-ray diffraction.Broadband infrared luminescence centred at around 1235 nm with full width at half maximum (FWHM) of about 300 nm is observed from the Ni2+-doped glass ceramics.The observed infrared emission could be attributed to the 3T2(F)→3A2(F)transition of octahedral Ni2+ ions in petalite-type crystallites.The product of the fluorescence lifetime and the stimulated emission cross sections is 1.2×10-24 cm2s.