| Influence of Gamma-Ray Irradiation on Absorption and Fluorescent Spectra of Nd：YAG and Yb：YAG Laser Crystals |
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| 引用本文： | 孙敦陆,;张庆礼,;肖敬忠,;罗建乔,;江海河,;殷绍唐. Influence of Gamma-Ray Irradiation on Absorption and Fluorescent Spectra of Nd：YAG and Yb：YAG Laser Crystals[J]. 中国物理快报, 2008, 25(6): 2081-2084 |
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| 作者姓名： | 孙敦陆, 张庆礼, 肖敬忠, 罗建乔, 江海河, 殷绍唐 |
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| 作者单位： | [1]Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031; [2]Department of Ceramics and Glass Engineering, CICECO, University of A veiro, A veiro 3810-193, Portugal |
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| 基金项目： | Supported by the Knowledge Innovation Project of Chinese Academy of Sciences, and the National Natural Science Foundation of China under Grant No 50772112. To whom correspondence should be addressed. |
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| 摘 要： | We investigate the influence of gamma-ray irradiation on the absorption and fluorescent spectra of Nd^3＋：Y3A15 O12 （Nd： YAG） and Yb^3＋ ： Y3A15 O12 （Yb： YAG） crystals grown by the Czochralski method. Two additional absorption （AA） bands induced by gamma-ray irradiation appear at 255nm and 340nm. The former is contributed due to Fe^3＋ impurity, the latter is due to Fe^2＋ ions and F-type colour centres. The intensity of the excitation and emission spectra as well as the fluorescent lifetime of Nd：YAG crystal decrease after the irradiation of 100 Mrad gamma-ray. In contrast, the same dose irradiation does not impair the fluorescent properties of Yb：YAG crystal. These results indicate that Yb： YA G crystal possesses the advantage over Nd： YA G crystal that has better reliability for applications in harsh radiant environment.
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| 关 键 词： | 激光器 γ射线辐射 晶体 荧光光谱 |
| 收稿时间： | 2007-11-26 |
Influence of Gamma-Ray Irradiation on Absorption and Fluorescent Spectra of Nd:YAG and Yb:YAG Laser Crystals |
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| SUN Dun-Lu,ZHANG Qing-Li,XIAO Jing-Zhong,LUO Jian-Qiao,JIANG Hai-He,YIN Shao-Tang. Influence of Gamma-Ray Irradiation on Absorption and Fluorescent Spectra of Nd:YAG and Yb:YAG Laser Crystals[J]. Chinese Physics Letters, 2008, 25(6): 2081-2084 |
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| Authors: | SUN Dun-Lu ZHANG Qing-Li XIAO Jing-Zhong LUO Jian-Qiao JIANG Hai-He YIN Shao-Tang |
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| Affiliation: | Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, Aveiro 3810-193, Portugal |
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| Abstract: | We investigate the influence of gamma-ray irradiation on the absorption and fluorescent spectra of Nd3+:Y3Al5O12 (Nd:YAG) and Yb3+:Y3Al5O12 (Yb:YAG) crystals grown by the Czochralski method. Two additional absorption (AA) bands induced by gamma-ray irradiation appear at 255nm and 340nm. The former is contributed due to Fe3+ impurity, the latter is due to Fe2+ ions and F-type colour centres. The intensity of the excitation and emission spectra as well as the fluorescent lifetime of Nd:YAG crystal decrease after the irradiation of 100Mrad gamma-ray. In contrast, the same dose irradiation does not impair the fluorescent properties of Yb:YAG crystal. These results indicate that Yb:YAG crystal possesses the advantage over Nd:YAG crystal that has betterreliability for applications in harsh radiant environment. |
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| Keywords: | 42.70.Hj 61.72.Ji 61.80.Ed 78.55.-m |
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