Abstract：Al3+ and K+ ions were introduced in Er3+-doped silica glass successfully through Sol-gel route. The optical characterizations including absorption spectra,transmission spectra,photofluorescence spectra,up-conversion spectra,Raman spectra and fluorescence decay lifetime were undertaken on the samples. The results show that not only the fluorescence intensity was strenthened by more than 20 and 70 times，but also the lifetime of Er3+ ions in Al3+-doped and K+ and Al3+-codoped samples was prolonged to 7.1 and 11.2 ms from 4.8 ms，respecticely. And by analysing the results，the authors concluded that the influences of Al3+ and K+ on Er3+ ions are completely different. And the authors found that Er3+ ions in silica glass may have two up-conversion mechanisms: two-phonon absorption and energy-transfer up-conversion using 980 nm excitation.
Key words：K+ ions;Silica glass;Spectral properties;Up-conversion mechanis ms
毛艳丽,潘新华,林丙臣. K+和Al3+掺杂对掺Er3+溶胶凝胶玻璃发光特性的影响[J]. 光谱学与光谱分析, 2007, 27(07): 1283-1286.
MAO Yan-li,PAN Xin-hua,LIN Bing-chen. Influence of K+ and Al3+ on the Optical Properties of Er3+ Doped Sol-Gel Derived Silica Glasses . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(07): 1283-1286.
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