【摘要】 本文通过实验研究了YGG:Cr³⁺晶体的光谱特性,报道了室温下的吸收谱,10,133,300K的荧光谱,以及荧光寿命、无辐射跃迁几率、辐射量子效率与温度之间的依赖关系。从吸收谱及荧光谱中确定在C_3i（S₆）低对称场微扰下,Cr³⁺离子在基质YGG中²T₁能级分裂的子能级及基态⁺A₂²E零声子跃迁R线的位置。更多还原

【Abstract】 The spectral characteristics of YGG:Cr³⁺ crystal was investigated experimentally. The absorption spectrum at 300 K and the fluorescence spectrum at 10 K, 133 K, and 300 K are presented. The fluorescence life time, nonradiative transition propability and radiative quantum efficiency as the function of temperature are also presented. Based on the absorption spectrum and the fluorescence spectrum, with the perturbation of C_3i（S）6 low symmetry field, the individual sub-staes resulting from the splitting of Cr3+ 2T₁ state in the YGG host, and the location of R line due to ²⁴A₂（?）E zero phonon transition are determined.更多还原