为了研究用畸变透镜孔产生的不同束型的精细激光束,先由基尔霍夫衍射公式得到高斯光束微圆孔衍射积分式,然后再经适当推理得到高斯光束通过畸变透镜孔的菲涅耳衍射的计算式,进而探讨了畸变透镜孔菲涅耳衍射对高斯光束进行束型转变的原理。用Matlab软件进行计算机模拟实验,表明了这种方法和技术是可行的。这种激光束整形技术可产生用于微细加工的不同束型的精细激光束。 In order to study the fine laser beam with different beam types produced by the distorted lens hole, the diffraction formula of Gaussian beam micro-circular aperture is first obtained by Kirchhoff’s diffraction formula, and then the Fresnel Gaussian beam passing through the deformed lens hole is properly inferred Diffraction formula, and then explores the Fresnel lens distortion Fresnel diffraction beam Gaussian beam beam transformation principle. Computer simulation experiments using Matlab software show that this method and technology is feasible. This laser beam shaping technique produces fine laser beams of different beam types for microfabrication.