高斯型激光圆孔衍射中的光束畸变调控研究

Beam distortion regulation in Gaussian laser circular aperture diffraction

从光波衍射的基本理论出发,利用高斯型分布的激光束,研究开普勒望远镜系统在衍射过程中光束畸变调控方法。利用中阶Zernike多项式构建像差函数法来模拟望远镜系统中的四叶畸变现象,并将该Zernike因子引入光学系统中弥补畸变效果。研究发现,波长和孔径会对奇异光强的分布产生明显的影响,波长增大的时候会改变光斑的形状,孔径会影响光斑强度和尺寸,11阶的Zernike四叶形变因子可以抵消望远镜系统的畸变现象。

Based on the basic theory of lightwave diffraction,the regulation method of beam distortion in the diffraction process of the Kepler telescope system was studied by using a Gaussian-distributed laser beam.The aberration function method was constructed by using the intermediate-order Zernike polynomial to simulate the four-leaf distortion in the telescope system,and the Zernike factor was introduced into the optical system to compensate for the distortion effect.The results show that the wavelength and aperture have a significant influence on the distribution of singular light intensity,in which the increase of wavelength will change the shape of the light spot,the aperture will affect the intensity and size of the light spot,and the 11th order Zernike four-leaf deformation factor can offset the distortion phenomenon of the telescope system.