Differentiated array beam wavefront corrector preparation method based on aberration measurement

Abstract

The invention discloses a differential array beam wavefront corrector preparation method based on aberration measurement. The method comprises the following steps of measuring the distortion wavefront deviation of each sub-beam in an array beam comprising a plurality of sub-beams, and carrying out the three-dimensional modeling of an integrated wavefront corrector through three-dimensional modeling software, importing the model into simulation software for simulation optimization, judging whether the deformation amount and the resonant frequency of each sub-beam deformable mirror of the corrector meet design requirements or not, and if so, recording mirror body structure parameters, otherwise, conducting three-dimensional modeling again, and continuing simulation optimization until the design requirement is met, and preparing the differential wavefront corrector according to the structural parameters of the mirror body. The method has the advantages of low cost, compact system structure, customized design, high correction efficiency and the like.

Description

technical field [0001] The invention relates to the fields of incoherent array laser synthesis and adaptive optics, in particular to a method for preparing a differential array beam wavefront corrector based on single-beam aberration measurement. Background technique [0002] Traditional high-energy laser systems generally use a single high-power laser as the laser light source, which has complex thermal management, poor beam quality, and poor mobility. At present, the array synthesis of the beams emitted by multiple low-power lasers is one of the effective ways to achieve high-power laser output. [0003] Array beam synthesis refers to arranging multiple single beams according to a certain spatial position to form an array beam and then synthesize and output it. Array beam combining can be divided into coherent combining and non-coherent combining. [0004] According to the basic principles of physical optics, to achieve stable interference, the frequency and polarization...

AI Technical Summary

Problems solved by technology

There is no report on the application of such deformable mirrors for wavefront correction of arrayed beams

[0012]Shortcomings or deficiencies of the current technology: the arrangement of the driver electrodes in each cell is consistent, the wavefront aberration correction capability is the same, and there is no aberration of the incident beam corresponding to each cell Features targeted design, lack of design flexibility

Since each beam comes from an independent laser and optical transmission link during array beam synthesis, the aberration components contained in it are also different, so the wavefront correction capability requirements of each beam are different, so there is no differentiated driver The design of honeycomb deformable mirror cannot be directly applied to solve the wavefront correction problem of arrayed beams

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