Wave-front reconstruction from intensity distributions near focal plane

被引：0

作者：

Jia H. ^{[1
]}

Feng B. ^{[1
]}

Li F. ^{[1
]}

Xiang Y. ^{[1
]}

Wang F. ^{[1
]}

Han W. ^{[1
]}

Li K. ^{[1
]}

机构：

[1] Research Center of Laser Fusion, CAEP, Mianyang 621900

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2010年 / 22卷 / 05期

关键词：

Intensity distribution; Legendre polynomial; Optimization; Reconstruction of wave-front;

D O I：

10.3788/HPLPB20102205.1049

中图分类号：

学科分类号：

摘要：

A simple method is introduced to reconstruct the nearfield wave-front from intensity distribution near foal plane, which is treated in this paper as an optimization problem. Proper orthogonal decomposition technique is applied to describe the wave-front to be reconstructed. By optimizing the coefficients of the polynomial to minimize the differences between simulated intensity distributions and the real intensity distributions, nearfield wave-front can be reconstructed and characterized. Simulations are carried out upon square-aperture beam using Legendre polynomial. Conjugate gradient method is used and optimization is performed for several steps to reduce executing time. The results show that the reconstructed wave-front are consistent well with the reference wave-front.

引用

页码：1049 / 1052

页数：3

共 9 条

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