| In：Fe：Cu：LiNbO_3晶体光全息存储性能的研究 |
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| 引用本文： | 符运良.In：Fe：Cu：LiNbO_3晶体光全息存储性能的研究[J].半导体光电,2012,33(1):83-86. |
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| 作者姓名： | 符运良 |
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| 作者单位： | 海南师范大学物理与电子工程学院,海口,571158 |
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| 基金项目： | 海南省自然科学基金资助项目 |
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| 摘 要： | 采用提拉法生长了In：Fe：Cu：LiNbO3晶体,测试了晶体的紫外可见光谱、红外吸收光谱。利用二波耦合方法测试了晶体的响应时间、最大衍射效率、计算晶体的光折变灵敏度。结果表明,随In3＋离子浓度的增加,在In3＋浓度较低时,In：Fe：Cu：LiNbO3晶体紫外可见光吸收边发生紫移,而红外吸收峰3 482cm-1位置基本不变,但浓度达到阈值时,紫外可见光吸收边相对于低浓度发生红移,而红外吸收峰向高波数方向移动;In3＋浓度增加时,响应时间变短,最大衍射效率下降,晶体存储灵敏度提高。
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| 关 键 词： | In：Fe：Cu：LiNbO3晶体 吸收光谱 全息存储 |
Research on Optical Holographic Storage Properties in In:Fe:Cu:LiNbO3 Crystals |
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| FU Yunliang.Research on Optical Holographic Storage Properties in In:Fe:Cu:LiNbO3 Crystals[J].Semiconductor Optoelectronics,2012,33(1):83-86. |
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| Authors: | FU Yunliang |
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| Affiliation: | FU Yunliang(College of Physics and Electronic Engineering,Hainan Normal University,Haikou 571158,CHN) |
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| Abstract: | In:Fe:Cu:LiNbO3 crystals were grown by the Czochralski method,and ultraviolet visible light absorption and infrared absorption spectra were measured.The response time and the aximum diffraction efficiency were measured by two-wave coupling experiment,and the photorefractive sensitivity were calculated.The results show that under low concentration of In3+,with the increasing concentration of In3+,the absorptions of ultraviolet visible light of In:Fe:Cu:LiNbO3 shift to the violet and the infrared absorption peak at 3 482 cm-1 was invariant,but red shift of ultraviolet visible light happens and the infrared absorption moves to high wavenumber when the concentration of In3+ comes to the threshold.The photorefractive sensitivity increases and the aximum diffraction efficiency and the response times decrease with the increase of In3+ doping concentration. |
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| Keywords: | In:Fe:Cu:LiNbO3 crystal absorption spectrum holographic storage |
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