High-quality Dy:PbWO₄ crystal has been successfully grown by the Bridgman method. Fluorescence properties of the grown crystal at the yellow-light region were discussed. The absorption cross-section of Dy³⁺ ions at 454 nm was calculated to be 0.142$\times$10⁻²⁰ cm², which corresponded to the transition from ⁶H_15/2 to ⁴I_15/2 level. Based on Judd-Ofelt theory, the J-O intensity parameters Ω_t and the emission cross-section were calculated. The fluorescence lifetime of ⁴F_9/2 level was measured to be 193 μs.

中文翻译：

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Dy：PbWO ₄晶体的光谱表征

高品质的Dy：PbWO ₄晶体已经通过Bridgman方法成功地生长。讨论了生长的晶体在黄光区域的荧光特性。计算得出Dy ³⁺离子在454 nm处的吸收截面为0.142$\times$10 ^-20  cm ²，对应于从⁶ H _15/2到⁴ I _15/2的跃迁。基于Judd-Ofelt理论中，JO强度参数Ω_吨和发射截面进行了计算。⁴ F _9/2能级的荧光寿命测得为193μs。