| OBSERVATION OF PHOTOREFRACTIVE EFFECT OF KNbO3 CRYSTAL AT μW ILLUMINATION |
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| 引用本文： | 李旗,夏宗璜,卢希庭,王锋,龚旗煌,沈德忠.OBSERVATION OF PHOTOREFRACTIVE EFFECT OF KNbO3 CRYSTAL AT μW ILLUMINATION[J].中国物理 B,2000,9(11):841-843. |
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| 作者姓名： | 李旗 夏宗璜 卢希庭 王锋 龚旗煌 沈德忠 |
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| 作者单位： | (1)Department of Physics, Peking University, Beijing 100871, China; (2)Department Technical Physics, Peking University, Beijing 100871, China; (3)Research Institute of Synthetic Crystals, Beijing 100018, China; (4)State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China; Department Technical Physics, Peking University, Beijing 100871, China |
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| 基金项目： | Project supported by the Chinese Postdoctoral Foundation and by the Laboratory of Heavy-ion Physics Institute, Peking University, China. |
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| 摘 要： | The photorefractive effects of the as-grown and proton-implanted KNbO3 crystals were studied by two-wave mixing at 62.2μW/cm2 illumination. At this pump power level, the as-grown crystal showed little photorefractive effect, while the proton-implanted crystal showed an obvious effect. Furthermore, there seemed to exist two photorefractive gratings with response times of 22.54 and 1596.30s, at 62.2μW/cm2 pump power level, in the proton-implanted sample. This phenomenon has been attributed to the influence of proton-implantation.
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| 收稿时间： | 2000-05-14 |
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