| 啁啾脉冲放大系统中单光栅展宽器的优化 |
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| 引用本文： | 徐光,钱列加,范滇元.啁啾脉冲放大系统中单光栅展宽器的优化[J].中国激光,2002,29(12):1067-1070. |
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| 作者姓名： | 徐光 钱列加 范滇元 |
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| 作者单位： | 1. 中国科学院上海光学精密机械研究所高功率激光物理国家实验室,上海,201800
2. 复旦大学信息学院光科学与工程系,上海,200433 |
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| 基金项目： | 国家自然科学基金 (No .6 0 0 880 0 3)，973国家重点基础研究发展规划 (G19990 75 2 0 2 3)，国家 86 3高技术惯性约束核聚变项目 |
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| 摘 要： | 计算了啁啾脉冲激光放大系统中单光栅展宽器在入射角大于和小于利特罗角两种入射情况 ,发现对同一飞秒脉冲在相同展宽比条件下 ,入射角小于利特罗角时所需光栅宽度要远小于入射角大于利特罗角时所需的光栅宽度 ,且在入射角小于利特罗角时存在一最佳入射角 ,此时所对应的光栅宽度达到最小值。同时理论分析及数值计算显示 ,在上述条件下入射角小于利特罗角时此单光栅展宽器的等效光栅对间距较入射角大于利特罗角时大为缩短。
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| 关 键 词： | 啁啾脉冲放大 利特罗角 光栅宽度 |
| 收稿时间： | 2001/9/17 |
Optimization of the Single-grating Stretcher in Chirped-pulse Amplification |
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| XU Guang ,QIAN Lie-jia ,FAN Dian-yuan National Laboratory on High Power Laser and Physics.Optimization of the Single-grating Stretcher in Chirped-pulse Amplification[J].Chinese Journal of Lasers,2002,29(12):1067-1070. |
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| Authors: | XU Guang QIAN Lie-jia FAN Dian-yuan National Laboratory on High Power Laser and Physics |
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| Institution: | XU Guang 1,QIAN Lie-jia 2,FAN Dian-yuan 1 1National Laboratory on High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,The Chinese Academy of Sciences,Shanghai 201800 2Department of Optical Science and Engineering,College of Information,Fudan University,Shanghai 200433 |
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| Abstract: | For a pulse under the same stretch ratio there are two cases: one is the incident angle being less than Littrow angle and the other is the incident angle being bigger than Littrow angle. Investigation shows that the needed grating width is less in the former case than that in the latter case, and with the incident angle being one optimum value the needed grating width will reach the maximum in first case. Under the same condition the perpendicular distance between the gratings is also much less in first case than that in second case. |
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| Keywords: | chirped-pulse amplification Littrow angle grating width |
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