| 电子束扫描LiNbO_3制备畴反转光栅 |
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| 引用本文： | 陈云琳,阮永丰,姚琲,李宝凌,李文润. 电子束扫描LiNbO_3制备畴反转光栅[J]. 中国激光, 1996, 23(6): 505-508 |
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| 作者姓名： | 陈云琳 阮永丰 姚琲 李宝凌 李文润 |
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| 作者单位： | 天津大学物理系，天津大学分析中心 |
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| 摘 要： | 使用日产ＨＩＴＡＣＨＩＸ－６５０型扫描电镜实现了ＬｉＮｂＯ３晶体的周期性电畴反转，电子束扫描是在晶体的负畴面实现的．晶体表面上的扫描轨迹是断续的，晶体表面的畴反转宽度小于晶体内部的畴反转宽度。对不同的扫描速率和扫描电流得到了不同的畴反转宽度和深度。对畴反转的机理也进行了探讨。
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| 关 键 词： | 电子束扫描，畴反转光栅，LiNbO_3晶体，扫描速率，线电荷密度 |
| 收稿时间： | 1995-06-23 |
Fabrication of Domin-inverted Grating in LiNbO_3 by Electron-beam Scanning |
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| Chen Yunlin, Ruan Yongfeng, Yao Pei, Li Baoling, Li Wenrun. Fabrication of Domin-inverted Grating in LiNbO_3 by Electron-beam Scanning[J]. Chinese Journal of Lasers, 1996, 23(6): 505-508 |
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| Authors: | Chen Yunlin Ruan Yongfeng Yao Pei Li Baoling Li Wenrun |
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| Abstract: | A domain-inverted grating is realized by using a scanning electron microanalyzer.Domain inversion in Z- cut LINbO3 by injecting electrons into C- face was Observed. It wasfound that the scanning trace on the crystal surface tended to segment and the inversionwidth near the crystal surface was thinner than that inside the crystal. With different scanrates and beam currents, we get different domain widths and depths. The domain inversionmechanism was also discussed roughly. |
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| Keywords: | electron scanning domain-inverted grating waveguide LiNbO_3 secondharmonic wave scanning rate line-charge density |
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