| 相位匹配法在毛细管波导中产生高次谐波的分析 |
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| 引用本文： | 刘智,李儒新.相位匹配法在毛细管波导中产生高次谐波的分析[J].光学学报,2000,20(4):33-439. |
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| 作者姓名： | 刘智 李儒新 |
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| 作者单位： | 中国科学院上海光学精密机械研究所强光光学开放研究实验室,上海,201800 |
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| 基金项目： | 中国科学院百人计划项目，国家攀登预演项目，国家“86 3”高技术计划项目 |
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| 摘 要： | 在理论上研究了超短强激光脉冲与毛细管中惰性气体相互作用产生高次谐波的最佳相位匹配条件，在计算中发现了特定级次 相位匹配中截止驱动光强的存在。分析表明要想使高次谐波获得相位匹配，需要超短脉宽的驱动脉冲以及电离能大的气体工作介质。讨论了毛细管波导中的强场高次谐波选择性并指出了改善谐波选择性的措施。
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| 关 键 词： | 高次谐波 相位匹配法 强激光脉冲 毛细管波导 |
| 收稿时间： | 1998/12/16 |
Analysis of the Phase-Matched High-Order Harmonics Generation in a Hollow Fiber Wave-Guide |
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| Liu Zhi,Li Ruxin.Analysis of the Phase-Matched High-Order Harmonics Generation in a Hollow Fiber Wave-Guide[J].Acta Optica Sinica,2000,20(4):33-439. |
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| Authors: | Liu Zhi Li Ruxin |
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| Abstract: | The phase matching of high order harmonic generated in rare gases confined in a hollow fiber wave guide is studied theoretically. A cutoff intensity for a certain phase matched harmonic is found in calculations. The calculations show that a ultrashort pulse laser and the medium with higher ionization potential is necessary for generating higher order phase matched harmonic. The possibility of selective generation of a certain order or several orders of harmonics in the hollow fiber wave guide is discussed, and some measures of improving the possibility of selectivity for a certain order or several orders of harmonics are advised. |
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| Keywords: | high order harmonics phase matching ultrashort high intensity laser pulse |
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