Laser wavefront distortion correction system

Abstract

The invention provides a laser wavefront distortion correction system. The laser wavefront distortion correction system comprises a solid laser, a thermal radiation perturbation source, a wavefront detection module and a control module; the solid laser generates a laser light beam; the wavefront detection module detects the laser light beam to obtain the near-field energy distribution information and the far-field information of the laser light beam; the control module analyzes the near-field energy distribution information and the far-field information of the laser light beam, and controls the thermal radiation perturbation source to emit a thermal radiation perturbation signal to the solid laser according to an analysis result; the solid laser adjusts the laser light beam according to the thermal radiation perturbation signal. According to the laser wavefront distortion correction system, the wavefront detection module and the thermal radiation perturbation source are used for detecting and correcting the laser light beam; the laser wavefront distortion correction system has no requirement on the output characteristic of the corrected light beam; in addition, the system is high in flexibility of perturbation source arrangement mode change and strength control, and high in operability; the beneficial effects of low corrected light requirement, low influence on the laser system and high accuracy are achieved.

Description

【Technical Field】 [0001] The present invention relates to the technical field of lasers. Specifically, the present invention relates to a laser wavefront distortion correction system. 【Background technique】 [0002] Since its inception, solid-state lasers have been widely used in industry, scientific research and other fields due to their good monochromaticity, coherence, and directionality. However, the gain medium of traditional solid-state lasers produces radial temperature gradients and end-face expansion under the action of pumping and cooling systems. The laser rod exhibits effects such as thermal lensing and stress birefringence, which severely limit the laser output power and beam quality. , Restricting the progress of laser coherent synthesis, lidar and other fields. In order to eliminate the influence of these reasons on the laser output, people use methods such as stimulated Brillouin scattering (SBS) effect and deformed mirrors to correct the wavefront distortion of ...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the technical defects of the existing laser wavefront distortion correction system, which require high correction light, affect the laser during the correction process, and have low accuracy, and provide a laser wavefront distortion compensation system

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