Optical and radiative properties of Nd3+-doped lead tellurite borate glasses

被引：13
|
作者：
Shigihalli, N. B. [1 ]
Rajaramakrishna, R. [2 ]
Anavekar, R. V. [2 ]
机构：
[1] KLE Soc S Nijalingappa Coll, Dept Phys, Bangalore 10, Karnataka, India
[2] Bangalore Univ, Dept Phys, Bangalore 56, Karnataka, India
来源：
CANADIAN JOURNAL OF PHYSICS | 2013年 / 91卷 / 04期
关键词：
RARE-EARTH IONS; FLUOROBOROPHOSPHATE GLASSES; SPECTRA; ND3+; INTENSITIES; PARAMETERS;
D O I：
10.1139/cjp-2012-0062
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Glass samples of composition (in mol%) 20PbO-20TeO(2)-(60 - x)B2O3-xNd(2)O(3) (x = 0, 1, 2, 3, 4) were prepared by melt quenching. The glassy nature of as-quenched samples was established via differential scanning calorimetry. The amorphous nature of the glasses was confirmed via powder X-ray diffraction measurements. Judd-Ofelt (JO) analysis based on UV-visible absorption spectra was performed to determine JO parameters Omega(lambda) (lambda = 2, 4, 6). The observed trend is Omega(2) > Omega(6) > Omega(4). The large value of Omega(2) indicates the presence of covalent bonding between the Nd3+ ions and the surrounding ligands. Radiative properties, such as radiative transition probabilities, branching ratios, and radiative lifetimes are estimated. The glass samples have relatively high branching ratio, and their emission (A(em)) to excited state absorption (A(ESA)) intensity ratio is higher than one for the F-4(3/2) -> I-4(11/2) transition, indicating that the prepared glasses may have potential laser applications.
引用
收藏
页码：322 / 327
页数：6
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