A high-power solid-state laser resonator system with automatic output power optimization

Abstract

The invention discloses a high-power solid-state laser resonator system that automatically optimizes the output power, including a deformable mirror, a gain medium, an output cavity mirror, a beam splitter, a power meter, a spot detector, a data acquisition card, a high-voltage amplifier, and a main controller. computer. In the present invention, the rear cavity full reflection mirror of the solid-state laser is replaced by a deformable mirror coated with a high-reflectivity dielectric film, and the surface shape change of the deformable mirror is controlled by a mountain-climbing algorithm based on the Zernike mode through the closed-loop feedback of the power meter, and the correction Various high- and low-order aberrations caused by thermal effects can solve the problem of output power drop caused by thermal lens effects in high-power lasers. The invention does not use any beam expansion and contraction system, does not increase the complexity of the laser resonant cavity, and has the advantages of simple structure and convenient control.

Description

technical field [0001] The invention relates to a solid-state laser resonator system, in particular to a high-power solid-state laser resonator system that automatically optimizes the output power. The self-adaptive optics technology in the resonator is used to correct the wavefront distortion caused by thermal effects in the resonator to improve the performance of the laser. output power of the system. Background technique [0002] High-power solid-state lasers are widely used in scientific research, material processing, laser fusion and other fields. The increase of laser power depends on the increase of pump power, and the increase of pump power will lead to serious thermal effects. The distortion caused by the thermal effect causes the output power and beam quality to drop significantly and multi-mode output appears. What is more serious is that when the thermal effect increases to a certain extent, the laser resonator will change from a stable cavity to an unstable cav...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the deficiencies of the existing solid-state laser intracavity aberration correction technology, and to provide an improved laser device for correcting wavefront distortion in the resonator, which can be used without changing the complexity of the laser resonator Under the premise of correcting the distortion of the laser cavity to improve the output power of the laser

Images