title: Spectroscopic properties of Nd3+ doped transparent oxyfluoride glass ceramics.
abstract: In this paper, the spectroscopic properties of Nd(3+) doped transparent oxyfluoride glass ceramics containing LaF(3) nano-crystals were systematically studied. The formation and distribution of LaF(3) 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 Omega(t) (t=2, 4, 6), spontaneous emission probability, radiative lifetime, radiative quantum efficiency, width of the emission line and stimulated emission cross-section of Nd(3+) were evaluated. Particularly, the effect of Nd(3+) doping level on them was discussed. With the increase of Nd(3+) concentration in the glass ceramic, the experimental luminescence lifetime, radiative quantum efficiency and stimulated emission cross-section vary from 353.4 micros, 78.3% and 1.86 x 10(-20)cm(2) to 214.7 micros, 39.9% and 1.52 x 10(-20)cm(2), respectively. The comparative study of Nd(3+) spectroscopic parameters in different hosts suggests that the investigated glass ceramic system is potentially applicable as laser materials for 1.06 microm emission.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Yu
authors.forename: Daqin
authors.initials: D
authors.lastname: Chen
authors.forename: En
authors.initials: E
authors.lastname: Ma
authors.forename: Yuansheng
authors.initials: Y
authors.lastname: Wang
authors.forename: Zhongjian
authors.initials: Z
authors.lastname: Hu
mesh_terms: D002516:Ceramics / Q000737:chemistry*; D005461:Fluorine / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D007477:Ions; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D009354:Neodymium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D013053:Spectrophotometry; D014961:X-Ray Diffraction
chemical_list: D007477:Ions; D010087:Oxides; D005461:Fluorine; D009354:Neodymium; C014559:fluorine monoxide