| 二维LiNbO3非线性光子晶体 |
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| 引用本文： | 倪培根,马博琴,程丙英,张道中.二维LiNbO3非线性光子晶体[J].物理学报,2003,52(8):1925-1928. |
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| 作者姓名： | 倪培根 马博琴 程丙英 张道中 |
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| 作者单位： | 中国科学院物理研究所和凝聚态物理中心光物理实验室,北京 100080 |
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| 基金项目： | 国家重点基础研究发展规划（批准号：2001CB6104）和国家自然科学基金（批准号：600780 07，60207009）资助的课题. |
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| 摘 要： | 制备了周期为13.64 μm方形格子二维周期性极化的LiNbO3，利用二阶准相位匹 配实现了波长为1.064μm二倍频，二次谐波的内部转换效率高达42％. 测量了二次谐波输出功率随晶体温度及入射光入射方向的变化，实验值与模拟计算一致. 制备二阶准相位匹配掩模板，解决了在制备一阶准相位匹配掩模板中遇到周期尺寸太小、数据量大的难题，同时还降低了因周期太小造成的极化难度.
关键词：
二维
准相位匹配
二次谐波
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| 关 键 词： | 二维 准相位匹配 二次谐波 |
| 文章编号： | 1000-3290/2003/52(08)1925-04 |
| 收稿时间： | 2002-11-06 |
| 修稿时间： | 2002年11月6日 |
Two-dimensional periodically poled LiNbO3 nonlinear photonic crystal |
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| Ni Pei-Gen,Ma Bo-Qin,Cheng Bing-Ying and Zhang Dao-Zhong.Two-dimensional periodically poled LiNbO3 nonlinear photonic crystal[J].Acta Physica Sinica,2003,52(8):1925-1928. |
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| Authors: | Ni Pei-Gen Ma Bo-Qin Cheng Bing-Ying and Zhang Dao-Zhong |
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| Abstract: | A two-dimensional periodically poled lithium niobate crystal with a 13.64 μm period was fabricated. The inverted duty cycle was about 23%. The second harmonic output for the second-order quasi-phase-matching (QPM) against the input was measured. The maximum second harmonic internal conversion efficiency was higher than 40%. All results implied that the second-order QPM could be used to obtain high-frequency conversion efficiency. Compared with the first-order QPM, the second-order QPM can reduce the requirement for the poling technique and the mask fabrication. |
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| Keywords: | two-dimensional quasi-phase-matching second harmonic generation |
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