Luminescence Properties of Ce:YAG Single Crystals and Ceramics Under Laser Excitation

被引：0
|
作者：
Jin Y. [1 ,2 ]
Guo X. [1 ]
Cao D. [3 ]
Zhang H. [4 ]
Zhang G. [1 ,2 ]
Li H. [1 ]
机构：
[1] Research and Development Center for High Power Laser Components, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai
[2] University of Chinese Academy of Sciences, Beijing
[3] Kunshan Kaiwei Electronic Co., Ltd., Suzhou, 215345, Jiangsu
[4] Hangzhou North Car Depot, Shanghai Railway Bureau, Hangzhou, 311100, Zhejiang
来源：
Li, Haibing (lhb184@sina.com) | 2017年 / Science Press卷 / 44期
关键词：
Conversion efficiency; Fluorescent materials; High power density laser; Luminous flux; Materials;
D O I：
10.3788/CJL201744.1003001
中图分类号：
学科分类号：
摘要：
Yttrium aluminium garnet (YAG) single crystals and ceramics with different Ce3+-doping concentrations (mole fraction) are prepared. The luminous flux, photoelectric conversion efficiency, color rendering index, and color temperature of Ce:YAG single crystals and ceramics under laser excitation are also analyzed. Under the excitation of the laser with a current of 2.6 A, the luminous flux of ceramics with a Ce3+-doping concentration of 0.3% is the highest at 617.2 lm. The single crystals with a Ce3+-doping concentration of 0.5% have a high color rendering index of 62 and a color temperature of 5841 K. Under the excitation of the laser with a power of 2.61 W and a power density of 10.8 W·mm-2 at the material center, the optical conversions of Ce:YAG single crystals and ceramics are both unsaturated and the corresponding optical-to-optical conversion efficiencies are both about 240 lm·W-1. The experimental results show that the ceramics and single crystals are suited to produce high brightness white light under high power density laser excitation. © 2017, Chinese Lasers Press. All right reserved.
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