摘要
Broadband near-infrared emission from transparent Ni^2+-doped sodium aluminosilicate glass-ceramics is observed. The broad emission is centred at 1290nm and covers the whole telecommunication wavelength region (1100- 1700hm) with full width at half maximum of about 340hm. The observed infrared emission could be attributed to the 3T2(F) → 3A2(F) transition of octahedral Ni^2+ ions that occupy high-field sites in nanocrystals. The product of the lifetime and the stimulated emission cross section is 2.15 × 10^-24 cm^2s. It is suggested that Ni^2+- doped sodium aluminosilicate glass ceramics have potential applications in tunable broadband light sources and broadband amplifiers.
Broadband near-infrared emission from transparent Ni^2+-doped sodium aluminosilicate glass-ceramics is observed. The broad emission is centred at 1290nm and covers the whole telecommunication wavelength region (1100- 1700hm) with full width at half maximum of about 340hm. The observed infrared emission could be attributed to the 3T2(F) → 3A2(F) transition of octahedral Ni^2+ ions that occupy high-field sites in nanocrystals. The product of the lifetime and the stimulated emission cross section is 2.15 × 10^-24 cm^2s. It is suggested that Ni^2+- doped sodium aluminosilicate glass ceramics have potential applications in tunable broadband light sources and broadband amplifiers.
基金
Support by the Postdoctoral Science Foundation of China under Grant No 2005038020.