Er^(3+)/Yb^(3+)共掺Bi_2O_3-B_2O_3-Ga_2O_3玻璃光谱性质研究

Spectral Properties of Er^(3+)/Yb^(3+) Co-doped Bi_2O_3-B_2O_3-Ga_2O_3 Glasses

制备了铒单掺和铒镱共掺的铋酸盐玻璃,对掺Er3+离子后玻璃的吸收光谱和荧光光谱进行了测试,分析了Yb2O3浓度对其吸收光谱和荧光光谱的影响,并应用McCumber理论计算了Er3+离子的受激发射截面.当Yb3+/Er3+的浓度比例为4:1时,荧光强度、荧光半高宽(FWHM)和峰值发射截面(σepeak)均达到了峰值,其FWHM和σepeak分别为77nm和1.08×10-20 cm2.

The novel Er^3＋ single-doped and Er^3＋/Yb^3＋ co-doped Bi2O3-B2O3-Ga2O3 glasses are prepared. The effect of Yb2O3 concentration on absorption spectra and emission spectra of glasses are measured and investigated. The stimulated emission cross-sections of the ^4I13/2→^4I15/2 transition of Er^3＋ are calculated using the McCumber theory. The results indicate that the emission intensity, fluorescence full width at half maximum （FWHM） and the peak value of stimulated emission cross-section （σe^peak） all reaches a peak value when Yb^3＋/Er^3＋ concentration ratio is 4/1, and the max FWHM and σe^peak is 77 nm and 1.08 ×^-20 cm^2, respectively.