高声子能量氧化物对掺铒碲酸盐玻璃光谱性质的影响

在研制的Er3+/Ce3+共掺低声子能量碲酸盐玻璃(TeO2-Bi2O3-TiO2)中,分别引入高声子能量WO3、SiO2和B2O3氧化物组分,测试了玻璃样品400~1700 nm范围内的吸收光谱、1.53μm波段荧光谱、Er3+离子荧光寿命和拉曼光谱,结合McCumber理论计算了Er3+离子光谱参数.结果表明:高声子能量氧化物组分的引入,能使声子参与的Er3+/Ce3+离子间能量传递过程变得更为有效,增加了Er3+离子亚稳态能级4I13/2上粒子数积累,从而增强1.53μm波段荧光发射.另外,高声子能量氧化物组分的引入还可以增加荧光半高宽(FWHM)和带宽品质因子(σe×FWHM).研究结果对于获取具有优异光谱特性的掺Er3+光纤放大器(EDFA)的玻璃基质具有实际意义.

Influence of High Phonon Energy Oxide on Spectroscopic Properties of Er3+/Ce3+ Co-doped Tellurite Glasses

High phonon energy oxides of WO3,SiO2and B2O3were introduced into the Er3+/Ce3+co-doped tellurite glass(TeO2-Bi2O3-TiO2) with low phonon energy,respectively.The absorption spectra in the wavelength region of 400–1700 nm,fluorescence spectra of 1.53 μm band,fluorescence lifetimes of Er3+ and Raman spectra of the glasses were measured.The spectral parameters of Er3+ were calculated with the help of McCumber theory.It is shown that the energy transfer process between Er3+ and Ce3+ becomes more effectively when introducing the high phonon energy oxide,and the 1.53 μm band fluorescence emission corresponding to Er3+:4I13/2→4I15/2 transition enhances accordingly due to the increased population of Er3+ in the 4I13/2 level.Meanwhile,the fluorescence width at half magnitude(FWHM) and bandwidth quality factor(σe×FWHM) can be improved with the introducing of high phonon energy oxide.The results provide practical significance to obtain the excellent spectroscopic glass host applied for the Er3+-doped fiber amplifier(EDFA).