Array light beam tilt aberration correction system

Abstract

The invention provides an array light beam tilt aberration correction system, n sub light beams are emitted after being collimated by corresponding self-adaptive optical fiber collimators respectively to generate array light beams, detection light is coupled to a generation light path of the array light beams, a window mirror perpendicular to the optical axis of the array light beams is arranged at an outlet of the array light beams, the window mirror is highly transparent to the array light beams, and is used for highly reflecting the detection light, the detection light is reflected by the window mirror, then returns along the original path and is inputted into the corresponding photoelectric detector, and the self-adaptive optical fiber collimator control modules change the light beam output directions of the self-adaptive optical fiber collimators by controlling the self-adaptive optical fiber collimators, so that electric signals outputted by the photoelectric detectors are maximum. At the moment, the output light beams of the respective adaptive optical fiber collimators are perpendicular to the window mirror so that optical axes of all array light beams are parallel, and tilt aberration correction is completed. According to the system, tilt aberration correction of coherent combination or incoherent combination array light beams can be realized.

Description

technical field [0001] The invention relates to the technical field of fiber laser array beam tilt aberration correction, in particular to an array beam tilt aberration correction system. Background technique [0002] Limited by physical factors such as nonlinear effects and laser loss threshold of materials, the output power of a single fiber laser is limited. In order to obtain higher power output, array beam combining technology has been widely used. [0003] Due to the influence of machining accuracy, system assembly error, external vibration and other factors, static or dynamic tilt aberrations are introduced, resulting in the inability of the optical axes of the array beam to be strictly parallel, which seriously affects the use effect. To solve this problem, the far field of the array beam is generally simulated by splitting and focusing at the output end of the array beam, and the strict parallelism of the optical axis of the array beam is achieved by adjusting the t...

AI Technical Summary

Problems solved by technology

[0003] Due to the influence of machining accuracy, system assembly error, external vibration and other factors, static or dynamic tilt aberrations are introduced, resulting in the optical axis of the array beam cannot be strictly parallel, which seriously affects the use effect

To solve this problem, the far field of the array beam is generally simulated by splitting and focusing at the output end of the array beam, and the strict parallelism of the optical axis of the array beam is achieved by adjusting the tilt aberration correction mechanism at the front end. There are many spatial optical paths in this scheme. The system is complex and the stability is poor

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