Flexible multi-beam laser processing head based on light field regulation and using method thereof

Abstract

The invention provides a flexible multi-beam laser processing head based on light field regulation and control and a using method thereof. The flexible multi-beam laser processing head comprises a shell, and a laser incident port and a laser emitting port are formed in the shell; a spatial light modulator is arranged in an inner cavity of the shell, a laser is incident to the spatial light modulator through a laser incident port, a light beam output by the spatial light modulator is divided into two paths, and one path is incident to a laser amplification module used for power amplification; alight beam output by the laser amplification module enters the laser processing system through the laser emitting port ; the other path of light beam output by the spatial light modulator enters a wavefront sensor for acquiring light field distribution in real time; the wavefront sensor and the spatial light modulator are connected to a control circuit, and the control circuit is used for transmitting preset light field distribution to the spatial light modulator; and meanwhile, the light field distribution acquired by the wavefront sensor in real time is compared with preset light field distribution, so that the spatial light modulator is controlled to regulate and control incident light, and high-flexibility, high-power and high-precision flexible laser processing can be realized.

Description

technical field [0001] The invention belongs to the technical field of laser amplification and laser application, in particular to a flexible multi-beam laser processing head based on light field regulation and its use method Background technique [0002] At present, in the field of high-end manufacturing, laser processing plays an important role due to its high precision and high efficiency, and the laser processing head, as an important auxiliary component in the laser processing system, plays a vital role in the laser processing process . The current laser processing head can be divided into two types: fixed laser processing head and scanning galvanometer according to whether the spot can move. Planning, the processing efficiency is slow; while the processing trajectory of the scanning galvanometer is planned by the motor inside the galvanometer, the processing speed is fast and the efficiency is high, but the optical path design is complicated, and coaxial blowing proce...

AI Technical Summary

Problems solved by technology

The current laser processing head can be divided into two types: fixed laser processing head and scanning galvanometer according to whether the spot can move. planning, the processing efficiency is slow; while the processing trajectory of the scanning galvanometer is planned by the motor inside the galvanometer, the processing speed is fast and the efficiency is high, but the optical path design is complicated, and coaxial blowing processing cannot be realized

Moreover, the current laser processing heads need to redesign the optical path when adjusting the light field, and the laser processing heads with different light field distributions cannot be well integrated in the same processing head, and the scanning galvanometer and the fixed laser processing head are both They have their own characteristics and have different applications in different occasions, and the current laser heads can only meet one of them, which cannot take into account its advantages, cannot meet the needs of many laser processing, and greatly increase the cost

In addition, the current light field distribution incident on the laser processing head often cannot be observed in real time, and the light field distribution of the laser beam incident on the processing surface is unknown, so it is impossible to judge whether it meets the processing requirements

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