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Structure, luminescence and scintillation characteristics of Yb, Na, Ba-codoped yttrium-aluminum garnet
Author(s): Yaxue Jin; Mingyan Pan; Hongji Qi; Maodong Zhu; Hetong Han; Zhaohui Song; Hui Zhang
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Paper Abstract

High-quality Yb-doped Y3Al5O12 [yttrium–aluminum garnet YAG] crystals and Na, Ba co-doped Yb:YAG crystals with diameter of 65mm were grown from melt by the Czochralski method. The chemical of the two crystals are (Yb0.1Y0.899)3Al5O10 and (Na0.0005Ba0.0005Yb0.1Y0.899)3Al5O10. The structure, photoluminescence properties and scintillation yield were studied. The prepared samples are identified as pure garnet structure by the XRD results, indicating that the co-doping of a small amount of Na, Ba ions has no influence on the structure of the host. Thermoluminescence glow curves with the temperature showed that there were 100℃ and 260℃ thermoluminescence peaks in the two kinds of crystals, but the peak intensity of co-doping sample decreased, which suggested the number of defects decreased significantly. Light output in co-doped crystals reaches 110% comparative to Yb:YAG crystals and the sensitivity increased by 40%. This suggests that trace ions co-doping may be a possible way to reduce the crystal defect and increase the optical output.

Paper Details

Date Published: 12 December 2018
PDF: 9 pages
Proc. SPIE 10844, Advanced Laser Technology and Applications, 1084402 (12 December 2018); doi: 10.1117/12.2502001
Show Author Affiliations
Yaxue Jin, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Mingyan Pan, Shanghai Institute of Optics and Fine Mechanics (China)
Hongji Qi, Shanghai Institute of Optics and Fine Mechanics (China)
Maodong Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Hetong Han, Northwest Institute of Nuclear Technology (China)
Zhaohui Song, Northwest Institute of Nuclear Technology (China)
Hui Zhang, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 10844:
Advanced Laser Technology and Applications
Shibin Jiang; Lijun Wang; Zejin Liu; Wei Shi; Pu Zhou, Editor(s)

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