【摘要】 采用提拉法生长了质量优良的Yb:GdScO₃晶体，对样品的X射线粉末衍射进行了Rietveld精修，给出了晶体计算密度及掺杂浓度。Yb³⁺的有效分凝系数计算为1.04。室温下测量了其吸收光谱、发射光谱和荧光寿命，首次计算了GdScO₃基质中Yb³⁺的吸收、发射振子强度、谱线强度、跃迁概率、能级寿命和积分发射截面等重要光谱参数，对其激光性能进行了初步评估。结果表明，Yb:GdScO₃易于输出1 030 nm和1 060 nm波段附近的激光，而对于1 000 nm附近的激光输出则只有在高粒子数反转情况下才可能实现。更多还原

【Abstract】 A high quality Yb∶GdScO₃crystal was grown by Czochralski method. The X-ray diffraction was refined by Rietveld method,and the calculated crystal density and doping concentration were obtained. The effective segregation coeffi cient of Yb³⁺ is calculated to be 1. 04. Its absorption spectrum,emission spectrum and fluorescence lifetime were measured at room temperature. The absorption,emission oscillator strength,spectral line strength,transition probability,energy level lifetime and integral emission cross section of Yb³⁺ in GdScO₃ matrix were calculated for the first time.The laser performance is preliminarily evaluated. The results show that Yb∶GdScO₃ is easy to output laser near 1 030 nm and 1 060 nm,while the laser output near 1 000 nm is only possible under the condition of high population inversion.更多还原