| 基于非周期极化铌酸锂晶体产生任意频率太赫兹辐射 |
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| 引用本文： | 毋雪,朱巧芬,张岩.基于非周期极化铌酸锂晶体产生任意频率太赫兹辐射[J].红外与毫米波学报,2011,30(3):221-223. |
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| 作者姓名： | 毋雪 朱巧芬 张岩 |
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| 作者单位： | 1. 首都师范大学物理系,太赫兹波谱与成像北京市重点实验室,太赫兹光电子学省部共建教育部重点实验室,北京100048
2. 北京工业大学应用数理学院,北京,100124 |
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| 摘 要： | 理论上研究并论证了飞秒激光在非周期性极化畴反转的铌酸锂晶体(LN)中由光整流效应产生任意频率、窄带的太赫兹(THz)波辐射的可行性.为实现对THz波谱的整形,文中利用模拟退火(SA)算法设计出铌酸锂晶体的极化畴反转结构的最佳模型,由此可产生任意预置时间波形的THz辐射场.结果表明,SA算法是一种有效的通过设计晶体极化畴...
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| 关 键 词： | 光学 THz波 模拟退火算法 极化畴反转结构 光整流效应 准相位匹配 |
| 收稿时间： | 8/30/2010 7:53:30 PM |
| 修稿时间： | 2010/10/25 0:00:00 |
Generation of arbitrary terahertz pulse in non periodically poled lithium niobate |
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| WU Xue,ZHU Qiao-Fen and ZHANG Yan.Generation of arbitrary terahertz pulse in non periodically poled lithium niobate[J].Journal of Infrared and Millimeter Waves,2011,30(3):221-223. |
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| Authors: | WU Xue ZHU Qiao-Fen and ZHANG Yan |
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| Affiliation: | Department of Physics, Capital Normal University,College of Applied Science, Beijing University of Technology,Department of Physics, Capital Normal University |
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| Abstract: | We demonstrated the narrowband terahertz(THz) generation on lithium niobate(LN) crystals with non-periodically poled domain structures. To realize the THz pulse shaping, we designed the optimal domain structures by using simulated annealing (SA) algorithm, and we obtained the THz radiation with arbitrary preset frequency components and intensities. It is demonstrated that this method is feasible in THz pulse shaping. |
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