Abnormal distortion and control of a Gaussian beam in circular aperture diffraction

On the basic theory of wave diffraction, Zernike polynomials have been built by using the aberration function method to study the abnormal distortion and control of laser beams with Gaussian distribution in circular aperture diffraction. In the process of research, it is found that under the different deformation degrees of Zernike polynomials in Z7 and Z8, the diffracted beam will produce comet optical aberrations, further causing the diffraction beam to deviate from the Gaussian profile and producing anomalous distortion. By optimizing the imaging position and adding a phase compensator, imaging errors such as aberration and distortion on the structure can be effectively controlled, and the beam transmission quality can be improved.