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利用分形法表征光学元件中高频相位畸变

Evaluating middle-high frequency phase distortion of optics by fractal method

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摘要

针对神光Ⅲ主机装置使用的光学元件, 基于分形理论, 分析中高频相位畸变的统计分布特征, 指出其满足分数布朗随机场, 并利用结构函数法对分形维数进行计算, 统计结果显示, 大口径钕玻璃片的分形维数在2.34~2.43之间。利用局部稳态的随机中点位移法, 提出一种新的表征光学元件相位的方法, 将分形维数作为参数, 可衡量中高频相位畸变, 对高功率激光光学元件的评价有参考意义。

Abstract

Based on the fractal theory, this paper analyzed statistical distribution features of middle-high frequency phase distortion of the optics for Shenguang-Ⅲ laser facility. The middle-high frequency phase distribution is found to be consistent with the model of fractional Brownian random field. The fractal dimension was calculated by structure function. The fractal dimension of large-aperture neodymium-doped phosphate amplifier glass is distributed between 2.34 and 2.43. A method of phase simulation by random midpoint-displacement was presented. In this method, the fractal dimension can be viewed as a parameter for estimating phase distortion, which helps to evaluate the high laser optics.

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中图分类号:TN24

DOI:10.3788/hplpb20132505.1171

所属栏目:ICF与激光等离子体

收稿日期:2012-11-20

修改稿日期:2013-01-26

网络出版日期:--

作者单位    点击查看

黄晚晴:中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
张颖:中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
王文义:中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
耿远超:中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
刘兰琴:中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900

联系人作者:黄晚晴(huangwq@caep.ac.cn)

备注:黄晚晴(1984-), 女, 助理研究员, 主要从事高功率固体激光器方面的研究;

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引用该论文

Huang Wanqing,Zhang Ying,Wang Wenyi,Geng Yuanchao,Liu Lanqin. Evaluating middle-high frequency phase distortion of optics by fractal method[J]. High Power Laser and Particle Beams, 2013, 25(5): 1171-1175

黄晚晴,张颖,王文义,耿远超,刘兰琴. 利用分形法表征光学元件中高频相位畸变[J]. 强激光与粒子束, 2013, 25(5): 1171-1175

被引情况

【1】张颖,刘兰琴,王文义,耿远超,黄晚晴,朱启华. 高功率激光装置的线性传输特性. 强激光与粒子束, 2014, 26(8): 81019--1

【2】王倩,梅海平,肖树妹,黄宏华,钱仙妹,朱文越,饶瑞中. 近地层大气光学湍流的分形和间歇性特征分析. 强激光与粒子束, 2014, 26(2): 21010--1

【3】姜涛,杨炜,郭隐彪,王健. 基于经验模态分解-Wigner分布的光学元件中频误差识别. 强激光与粒子束, 2014, 26(3): 32003--1

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