Tm3+掺杂GeGaSe和GeGaS玻璃的光谱特性和光谱参数计算

Spectral Characteristics and Spectral Parameter Calculation of Tm3+-doped GeGaSe and GeGaS Chalcogenide Glasses

摘要:

用熔融急冷法制备了Tm³⁺(1.0wt%)离子掺杂Ge₃₀Ga₅Se₆₅和Ge₃₀Ga₅S₆₅(mol%)玻璃,测试和分析了玻璃的吸收光谱和荧光光谱特性。根据吸收光谱,应用Judd-Ofelt理论计算分析了Tm³⁺在上述玻璃样品中的强度参数Ω_t(t=2,4,6)以及Tm³⁺各能级的自发跃迁几率、荧光分支比和辐射寿命等光谱参数。

Abstract:

Tm³⁺-doped chalcogenide glasses inGe₃₀Ga₅Se₆₅ and Ge₃₀Ga₅S₆₅(mol%) system were synthesized by melt-quenching technique. The properties of the glasses including absorption spectra and emission spectra were measured under 800nm excitation. According to the Judd-Ofelt theory and absorption spectrum, the intensity parameter Ω_t(t=2,4,6), the spontaneous radiative transition A, fluorescence branching ratio β and radiative lifetime rad of Tm³⁺ were calculated.