Judd-Ofelt (JO) theoretical analysis of 4f electron transitions in the Nd3+ absorption spectra was performed. From the JO intensity parameters, a set of the laser 4F3/2→4I 11/2 transitions characteristics are found and stimulated emission cross-sections are characterized. The effect of ...
Judd—Ofelt理论的分析与计算 林良书,薛燕陵,蒋器成 (华东师范大学电子科学技术系,上海200062) 摘要:给出了Judd—Ofeh(JO)理论模型中各参数及相关公式的理论分析,并在容易混淆的地方 给出必要的推导.结合掺Er3样品详细阐述了J—O理论的应用过程,说明了如何利用最小二乘 法拟合J—O理论核心参数(f=2,4,6)的步...
Judd–Ofelt (JO) theory is a powerful tool for analyzing the local environment around RE3+ ions and predicting their optical properties. Traditional JO analysis relies on absorption spectra to determine the Judd–Ofelt parameters (Ωλ). However, this approach can be challenging for powder material...
本工作根据Jndd- Ofelt理论,利用28个吸收光谱支项,19组方程计算了实验与理论振子强度,均方根偏差仅为1.9×10~(-7).用最小二乘法拟合实验与理论振子 强度所得到的三个Ω_λ唯像强度参数为:Ω_2-0.19×10~(20)cm~2;Ω_4=1.68×10~(-20)cm~2; Ω_6=0.62×10~(-2)cm~2.然后,计算了自发辐射电偶...
Judd-Ofelt (JO) analyses are performed on the efficient upconversion oxide phosphor Er:BaGd2ZnO5 as well as on the tunable phosphor Eu:BaGd2ZnO5. The refractive index of BaGd2ZnO5 found using the luminescence spectrum of Eu is n = 2.17. The JO parameters for Eu:BaGd2ZnO5 are Ω...
Judd–Ofelt analysispraseodymiumCIE color coordinatesThe effects of different concentrations of Pr 3+ ions on the optical properties of (70 x )B 2 O 3 +10BaO+10K 2 O+10ZnF 2 + x Pr 6 O 11 ( x =0.02mol.%, 0.03mol.%, 0.05mol.%, 0.1mol.%, and 0.5mol.%) glass prepared by ...
The main spectroscopic properties of a new B-Te-Na-Si-Al:Er~(3+) glass are investigated. The Judd-Ofelt (JO) intensity parameters (Ω), the spontaneous emission probabilities, the branching ratios and the radiative lifetimes for each observed Er~(3+)-ion levels were determined. The ...
JO parametersDy3+Aluminosilicate (AS) glasses doped with different Dyconcentrations were synthesized via sol-gel method. Absorption, photoluminescence spectra and lifetime of this material have been studied. From analytical results of absorption spectra, the Judd-Ofelt (JO) parameters of prepared ...
Phonon energies, Judd-Ofelt (JO) intensity parameters Ωλ (λ = 2, 4, 6) and radiative properties such as transition probability (A), radiative lifetime (τ), and branching ratio (βR) of Eu3+ ions in the prepared glasses were determined and Eu3+ emission may be suggested for ...
Judd-Ofelt (JO) intensity parameters were evaluated from the PL emission spectra in order to facilitate a study of the nature of site symmetry. From the CIE color chromaticity analysis it is evident that the prepared phosphors are found to emit an intense red light with the reasonable color ...