| 激光束低频位相误差叠加规律研究 |
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| 引用本文： | 邓青华,张小民,景峰,刘兰琴. 激光束低频位相误差叠加规律研究[J]. 强激光与粒子束, 2002, 14(1): 81-84 |
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| 作者姓名： | 邓青华 张小民 景峰 刘兰琴 |
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| 作者单位： | 1.中国工程物理研究院 研究生部， 四川 绵阳 621900； 2.中国工程物理研究院 激光聚变研究中心， 四川 绵阳 621900 |
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| 基金项目： | 国家 8 6 3惯性约束聚变领域资助课题 ( 86 3-4 16 -5 -2 |
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| 摘 要： | 用随机位相屏模拟光学元件产生的低频位相误差，并用RMS位相梯度对低频位相误差进行统计量化，通过对激光束传输过程进行模拟，对低频位相误差的叠加规律有了新发现，并对位相误差叠加规律进行了修改，为位相校正提供了理论上的依据；通过对光束聚焦过程进行研究，得到了低频位相误差影响光束焦斑尺寸的初步规律；并在此基础上提出了一种光束质量控制的新方法。
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| 关 键 词： | 位相补偿片 随机位相屏 RMS位相梯度 低频位相噪声 焦斑尺寸 |
| 文章编号： | 1001-4322(2002)01-0081-04 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2001-04-10 |
Research on the rule of laser beam''''s low-frequency phase aberration superimposition |
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| DENG Qing-hua ,,ZHANG Xiao-min ,JING Feng ,LIU Lan-qin. Research on the rule of laser beam''''s low-frequency phase aberration superimposition[J]. High Power Laser and Particle Beams, 2002, 14(1): 81-84 |
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| Authors: | DENG Qing-hua ZHANG Xiao-min JING Feng LIU Lan-qin |
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| Affiliation: | 1. Postgraduate Department, CAEP, Mianyang 621900, China;2. Research Center of Laser Fusion, CAEP, P.O.Box 919-988, Mianyang 621900, China |
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| Abstract: | With the low-frequency phase aberration caused by optics simulated by random phase plate and quantified with RMS phase gradient, the propagation of the beam is simulated. Something new is found with the rule of low-frequency phase aberration superimposition, so that the formula for the rule is modified, which is the theoretical foundation of phase aberration correction; the relationship between the focal spot size and RMS phase gradients is evident after simulating some focusing process. As a result, a kind of new method of controlling the beam quality is obtained. |
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| Keywords: | phase correction plate random phase screen RMS phase gradient low-frequency phase aberration focal spot size |
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