We have studied polarised luminescence of bismuth active centres in germanosilicate glasses. The 1.4-μm luminescence components with orthogonal polarisation states under excitation with linearly polarised light at λ = 1.26 μm have been shown to differ in intensity. The degree of polarisation reaches ≈0.12. Increasing the concentration of bismuth active centres leads to a decrease in the degree of polarisation of luminescence in the range studied.

中文翻译：

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锗硅酸盐玻璃中铋活性中心的偏振发光

我们研究了锗硅酸盐玻璃中铋活性中心的偏振发光。线性偏振光在λ= 1.26μm的激发下具有正交偏振态的1.4μm发光分量显示出不同的强度。极化度达到≈0.12。在所研究的范围内，铋活性中心的浓度增加导致发光的偏振度降低。