| The Effect of Oxidation／Reduction Disposing on Optical Properties of Mg： Fe： Mn： LiNbO3 Crystals |
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| 引用本文： | 郑威,Zhang Naidong,Zhao Liancheng,Xu Yuheng. The Effect of Oxidation／Reduction Disposing on Optical Properties of Mg： Fe： Mn： LiNbO3 Crystals[J]. 高技术通讯(英文版), 2003, 9(2): 14-16 |
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| 作者姓名： | 郑威 Zhang Naidong Zhao Liancheng Xu Yuheng |
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| 作者单位： | [1]CorrespoondingauthorReceivedcoJul.19,2002 [2]CollegeofChemicalScienceandEngineering,HeilongjiangUniversity,Harbin150008,P.R.China [3]SchoolofMaterialsScienceandEngineeringandbElectro-opticsInformationCenter,HarbinInstituteofTechnonlogy,Harbin150001,P.R.China |
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| 基金项目： | 国家高技术研究发展计划(863计划),国家重点基础研究发展计划(973计划) |
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| 摘 要： | The congruent tri-doped Mg: Mn: Fe: LiNbO3 crystal has been grown by Czochralski method. Some crystal samples are reduced in Li2CO3 powder at 500℃ for 24 hours or oxidized for 10 hours at 1100 ℃ in Nb2O5 powder. Compared with As-grown Mg:Mn:Fe:LiNbO3, the absorption edge in UV-Vis. absorption spectrum of the oxidized sample and the reduced shifts to the violet and the red, respectively. Reduction increases the absorption of crystals in visible light region. In two-wave coupling experiments, the writing time, maximum diffraction efficiency and the erasure time of crystal samples in the same conditions are determined. The results indicate that oxidation and reduction disposing has great effect on the holographic recording properties of these crystals. The reduced crystal exhibits the fastest response time of 160 s anmng the crystal series. The mechanism of post-disposing effect on the holographic recording properties of Mg:Mn:Fe:LiNbO3 crystals are investigated.
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| 关 键 词： | Mg：Mn：Fe：LiNbO3晶体 丘克拉斯基法 晶体生长 氧化／还原处理 光学性质 |
The Effect of Oxidation/Reduction Disposing on Optical Properties of Mg:Fe:Mn:LiNbO3 Crystals |
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| Zhang Naidong,Zhao Liancheng,Xu Yuheng. The Effect of Oxidation/Reduction Disposing on Optical Properties of Mg:Fe:Mn:LiNbO3 Crystals[J]. High Technology Letters, 2003, 9(2): 14-16 |
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| Authors: | Zhang Naidong Zhao Liancheng Xu Yuheng |
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| Affiliation: | School of Materials Science and Engineering and b Electro-optics Information Center,Harbin Institute of Technology, Harbin 150001, P.R.China;College of Chemical Science and Engineering, Heilongjiang University, Harbin 150008, P.R.China |
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| Abstract: | The congruent tri-doped Mg:Mn:Fe:LiNbO3 crystal has been grown by Czochralski method. Some crystal samples are reduced in Li2CO3 powder at 500 ℃ for 24 hours or oxidized for 10 hours at 1100 ℃ in Nb2O5 powder. Compared with As-grown Mg:Mn:Fe:LiNbO3, the absorption edge in UV-Vis. absorption spectrum of the oxidized sample and the reduced shifts to the violet and the red, respectively. Reduction increases the absorption of crystals in visible light region. In two-wave coupling experiments, the writing time, maximum diffraction efficiency and the erasure time of crystal samples in the same conditions are determined. The results indicate that oxidation and reduction disposing has great effect on the holographic recording properties of these crystals. The reduced crystal exhibits the fastest response time of 160 s among the crystal series. The mechanism of post-disposing effect on the holographic recording properties of Mg:Mn:Fe:LiNbO3 crystals are investigated. |
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| Keywords: | Mg:Mn:Fe:LiNbO 3 crystals Czochralski method oxidation and reduction disposing holographic recording properties |
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