| 啁啾匹配OPCPA方案用于消除超短激光脉冲的预脉冲 |
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| 引用本文： | 曾曙光, 张彬, 孙年春, 等. 啁啾匹配OPCPA方案用于消除超短激光脉冲的预脉冲[J]. 强激光与粒子束, 2012, 24: 394-398. doi: 10.3788/HPLPB20122402.0394 |
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| 作者姓名： | 曾曙光 张彬 孙年春 隋展 |
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| 作者单位： | 1.三峡大学 理学院 太阳能研究所, 湖北 宜昌 443002;;;2.四川大学 电子信息学院, 成都 61 0064;;;3.中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621 900 |
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| 摘 要： | 采用了一种利用啁啾匹配光参量啁啾脉冲放大（OPCPA）技术来消除泵浦脉冲时间窗口内的预脉冲的方法，并对该方法展开了数值模拟研究。分析了泵浦光脉冲形状、预脉冲提前时间等因素对预脉冲消除效果以及信噪比提升情况的影响。通过与传统的非共线OPCPA方案对比，发现啁啾匹配OPCPA方案可以消除掉离主脉冲更近的预脉冲，且它对预脉冲的消除效果受泵浦光脉冲形状的影响较小。
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| 关 键 词： | 光参量啁啾脉冲放大 啁啾匹配 预脉冲 对比度 信噪比 |
| 收稿时间： | 2011-08-29 |
| 修稿时间： | 2011-11-08 |
Chirp-matching OPCPA scheme for eliminating pre-pulse of ultrashort laser pulse |
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| Zeng Shuguang, Zhang Bin, Sun Nianchun, et al. Chirp-matching OPCPA scheme for eliminating pre-pulse of ultrashort laser pulse[J]. High Power Laser and Particle Beams, 2012, 24: 394-398. doi: 10.3788/HPLPB20122402.0394 |
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| Authors: | Zeng Shuguang Zhang Bin Sun Nianchun Sui Zhan |
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| Affiliation: | 1. Research Institute of Solar Energy,College of Science,China Three Gorges University,Yichang 443002,China;;;2. College of Electronics and Information Engineering,Sichuan University,Chengdu 610064,China;;;3. Research Center of Laser Fusion,CAEP,Mianyang 621900,China |
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| Abstract: | The paper proposes a method using chirp-matching optical parametric chirped pulse amplification (OPCPA) scheme to eliminate the pre-pulse within the gain time window defined by the pump duration is proposed. The effects of the pump pulse shape, as well as the delay time between main pulse and pre-pulse on the improvement of signal-to-noise ratio are analyzed. using numerical simulation Comparing the chirp-matching OPCPA scheme with the conventional noncollinear OPCPA scheme, it is shown that the chirp-matching OPCPA scheme can eliminate a pre-pulse which is much closer to the main pulse, and it depends less on the pump pulse shape. |
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| Keywords: | optical parametric chirped pulse amplification chirp-matching pre-pulse contrast signal-to-noise ratio |
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