Method for calibrating wave front of self-adaptive optical loop

Abstract

The invention relates to a method for calibrating the wave front of a self-adaptive optical loop. The method is to utilize the Fresnel diffraction theory and use computer programming to process wave front phase and amplitude distribution, which is measured in a certain position of an optical path, on a vertical optical axial plane, obtain phase and amplitude distribution of a conjugate plane of a distorting lens, take the computed value as a basis to change the surface shape of the distorting lens, and achieve the aim of wave front compensation. The method greatly increases the flexibility of the placing position of the distorting lens in the optical path, so that the complexity of the optical path can be effectively reduced and convenience is provided for wave front calibration comprising wave front pre-calibration. Therefore, the method has important practical value.

Description

technical field [0001] The invention relates to adaptive optics, in particular to a method for calibrating wavefronts by an adaptive optics loop. On the basis of measurement, it is a method to easily obtain the wavefront information of any position and size of light wave in the near field through computer programming processing, so that it is more convenient to provide the wavefront to be corrected for the deformable mirror loop correction wavefront previous information, especially phase information. Background technique [0002] Ultra-short and ultra-intense laser science is an important frontier field of science, focusing on the development of ultra-short and ultra-intense laser technology, the interaction between ultra-short and ultra-intensive lasers and matter, and cutting-edge basic research in interdisciplinary and related high-tech fields. , is the basis for realizing extreme physical conditions and revealing the essence of matter. [0003] Ultra-short and ultra-in...

AI Technical Summary

Problems solved by technology

This not only brings a large workload to the experiment, but also introduces additional errors. At the same time, in the case of using off-axis parabolic mirrors with different focal lengths, whether there is always a suitable position for the deformation mirror at the front end of the system is also an unavoidable big problem. question

[0014] In short, the aperture limitation of the wavefront measurement tool and the complexity of the laser system greatly restrict the convenient formation of the object-image conjugate relationship

At the same time, the position of the object image under different deformable mirrors is different, which brings troubles to the experiment and ultimately affects the correction effect

Moreover, the different optical path layouts of different laser systems to be corrected further complicate the existing problems

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