Yb3+掺杂硅酸盐玻璃的制备及光谱性质

采用高温熔融工艺制备了Yb3 掺杂硅酸盐玻璃.玻璃的非线性折射率n2小(1.62),转变温度和软化温度低(分别为540℃和585℃).测试了玻璃的吸收光谱和发射光谱,计算了Yb3 的积分吸收截面和受激发射截面及荧光寿命.吸收光谱曲线表明:吸收区域为850～1 100 nm,主峰位于975 nm,次峰位于908和944 nm;荧光光谱曲线表明:中心峰值为1 010 nm,荧光线宽为65.5 nm.积分吸收截面和受激发射截面及荧光寿命分别为3.44×104 pm3,0.710 pm2,1.05 ms.玻璃的常规性能测试和光谱特性研究表明,所制备的玻璃材料能够满足激光玻璃的使用要求.

The Preparation and Spectroscopic Characteristics of Ytterbium Silicate Glasses

Yb3+-doped silicate glasses were prepared at high temperature, which had a small non-linear refractive index coefficient n2 (1.62), lower transformation temperature and lower softening temperature (540 degrees C and 585 degrees C, respectively). The absorption spectrum from 850 to 1100 nm showed that the main peak was at 975 nm with two subpeaks near 908 nm and 944 nm, respectively. Emission peak was at 1,010 nm in the fluorescence spectrum with a 65.5 nm fluorescence half-line width. The integrated absorption cross section, stimulated emission cross section and fluorescence time were caculated to be 3.44 X 10(4) pm2, 0.71 pm2 and 1.05 ms, respectively, which satisfy the requirements of laser glasses.