【作者】 陈炳炎； 刘粤惠； 陈东丹； 姜中宏；

【Author】 CHEN Bing-yan, LIU Yue-hui, CHEN Dong-dan, JIANG Zhong-hong( Institute of Optical Communication Materials,South China Univ. of Tech., Guangzhou 510640, China; KeyLaboratory of Specially Functional Materials and Advanced Manufacturing Technology(South China Univ. of Tech.),Ministry of Education, Guangzhou 510640, China; Shanghai Institute of Optics&Fine Mechanics, ChineseAcademy of Sciences, Shanghai 201800, China)

【机构】 华南理工大学光通信材料研究所；

【摘要】 研究了掺Er3+碲酸盐玻璃的吸收和荧光光谱性质;应用Judd-Ofelt理论计算了碲酸盐玻璃中Er3+离子的强度参数Ω(Ω2=4.79×10-20cm2,Ω4=1.52 ×10—20cm2,Ω6=0.66 ×10-20cm2),计算了离子的自发跃迁几率,荧光分支比:应用McCumber理论计算了Er3+的受激发射截面(σe=10.40×10-21cm2)、Er3+离子4I13/2→4I15/12发射谱的荧光半高宽(FWHM=65.5nm)及各能级的荧光寿命(4I13/2能级τrad=3.99ms);比较了不同基质玻璃中Er3+离子的光谱特性,结果表明掺铒碲酸盐玻璃更适合于掺Er3+光纤放大器实现宽带和高增益放大.更多还原

【Abstract】 According to absorption spectrum, Judd-Ofelt intensity parameters were determined and used to calculate the radiation rates, fluorescent branch ratio and radiative lifetimes of Er3+-doped tellurite glasses. The J-O parameters were obtained, Ω2=4.79×10-20cm2, Ω4=1.52 ×10-20cm2, Ω6=0.70×10-20cm2. The stimulated emission cross sections( σe= 10.40×10-21cm2) of the Er3+ ion 4I13/2~~4I15/2 transition was calculated using the McCumber theory. The FWHM(FWHM=65.5nm) of the 4I13/2→4I15/2 emission and lifetimes of every level of Er3+ ion were measured and the lifetime of 4I13/2 level is 3.99ms. The Spectroscopic Properties of Er3+-doped tellurite glasses were compared with other glasses. The conclusions indicate that tellurite glass is much more beneficial for optical fiber ampliflber to realize broadband and high gain amplification.更多还原