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Effects of Composition on Spectroscopic Properties of Er~(3+)-doped Na_2O-Al_2O_3-SiO_2 Glasses

ZHANG De-bao 1,2, CHEN Bao-yu 1,2, LIU Zhu-ping 1, LI Shun-guang 1, HU Li-li 1 1Shanghai Institute of Optics and Fine Mechanics, The Chinese Academy of Sciences, Shanghai 201800, China 2Graduate School of the Chinese Academy of Sciences, Beijing 100039, China  
The effects of Na 2O contents on spectroscopic properties of Er 3+-doped Na 2O-Al 2O 3-SiO 2 glasses were studied in this paper. The Ω t parameters, radiative transition probability, and radiative lifetime of the Er 3+-doped sodium aluminosilicate glasses were calculated by the Judd-Ofelt (J-O) theory and absorption spectra. Then the relationship between Ω t parameters and Na 2O contents, and the effect of Na 2O contents on absorrption cross section, and the spontaneous emission probability of the 4I 13/2 level of Er 3+, and the full width at half maximum(FWHM) of 1.53 μm were analysed.
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