Poisson线瞄准技术初步研究

赵宗清; 郝轶聃; 王峰; 张颖; 王芳; 袁永腾; 丁永坤

Poisson线瞄准技术初步研究

中国工程物理研究院激光聚变研究中心,绵阳,621900

Preliminary research on Poisson-line alignment technique

摘要: Poisson斑的中心可以在很长的距离内保持与轴心共线因而能实现高精度的对心瞄准,这一技术被称为Poisson线技术.利用数值模拟和实验验证对Poisson线瞄准技术进行了初步研究.通过数值模拟发现,Poisson线上的光强随着离圆屏距离的增加而增大;Poisson斑直径随着圆屏直径增加而减小、随着距离增加而增加;其方向平行于入射激光束并过圆屏中心(待瞄准点).Poisson线对圆屏的倾斜非常不敏感,但是对中心的偏移非常敏感.模拟中发现Poisson线对10μm的中心偏移敏感,初步实验验证Poisson线可实现50μm的对心误差调节.

关键词:

Abstract: Poisson line technique is a method of generating a straight line by diffraction for high precision alignment,which can keep the center of Poisson spot in this line at long distances(several tens or hundreds of meters).Numerical simulation and experimental demonstration are proposed to research this technique.The intensity of the line increases asymptotically to the incident intensity as distance from the disk increases.The diameter of the line increases as the distances from the disk increases.Whereas it decreases as the diameter of the disks increases.The direction of the line is parallel to laser beam and propagates through the center of the disk,which is sensitive to center excursion and insensitive to the incline of the disk,Poisson line is sensitive to 10μm excursion in simulation.And Poisson line technique can adjust 50μm center excursion at long distance in experimental demonstration.

Poisson线瞄准技术初步研究

中国工程物理研究院激光聚变研究中心,绵阳,621900

关键词:

Preliminary research on Poisson-line alignment technique

中国工程物理研究院激光聚变研究中心,绵阳,621900

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