,Composition Dependence of Spectroscopic Properties of Er3+ Doped TeO2-WO3-ZnO Glasses

• 作 者: LI Jia-Cheng(李家成) LI Shun-Guang(李顺光) HU He-Fang(胡和方) GAN Fu-Xi(干福熹)
• 机 构: Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, PO Box 800-211, Shangh
• 出 处: 中国物理快报（英文版）
• 发表日期: 2004年1期

Er3+-doped TeO2-WO3-ZnO glasses were prepared and the absorption spectra, emission spectra and fluorescence lifetimes were measured. With more TeO2 content in the glasses, the emission full width at half maximum (FWHM) increaseswhile the lifetime of the 4 I13/2 level of Er3+ decreases. The stimulated emission cross-section of Er3+ calculated by the McCumber theory is as large as 0.86pm2. The product of the FWHM and the emission cross-section σe of Er3+ in TeO2-WO3-ZnO glass is larger than those in other glasses, which indicates that the glasses are promising candidates for Er3+-doped broadband amplifiers. The Judd-Offelt parameter Ω6 shows close composition dependence of the 1.5 μm emission bandwidth. The more the TeO2 content is, the larger the values of Ω6 and FWHM.