Article ID Journal Published Year Pages File Type
1238337 Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2007 5 Pages PDF
Abstract

In this paper, the spectroscopic properties of Nd3+ doped transparent oxyfluoride glass ceramics containing LaF3 nano-crystals were systematically studied. The formation and distribution of LaF3 nano-crystals in the glass matrix were investigated by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Based on Judd–Ofelt theory, the intensity parameters Ωt (t = 2, 4, 6), spontaneous emission probability, radiative lifetime, radiative quantum efficiency, width of the emission line and stimulated emission cross-section of Nd3+ were evaluated. Particularly, the effect of Nd3+ doping level on them was discussed. With the increase of Nd3+ concentration in the glass ceramic, the experimental luminescence lifetime, radiative quantum efficiency and stimulated emission cross-section vary from 353.4 μs, 78.3% and 1.86 × 10−20 cm2 to 214.7 μs, 39.9% and 1.52 × 10−20 cm2, respectively. The comparative study of Nd3+ spectroscopic parameters in different hosts suggests that the investigated glass ceramic system is potentially applicable as laser materials for 1.06 μm emission.

Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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