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Multi-beam laser amplification scanning processing system and method based on light field regulation and control

A technology of laser amplification and processing method, applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of poor adaptability, low energy utilization rate, low processing efficiency, etc.

Inactive Publication Date: 2020-10-27
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-beam laser amplification and scanning processing system and method based on light field regulation, which solves the defects of low processing efficiency, low energy utilization rate and poor adaptability in the existing laser processing process

Method used

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  • Multi-beam laser amplification scanning processing system and method based on light field regulation and control
  • Multi-beam laser amplification scanning processing system and method based on light field regulation and control
  • Multi-beam laser amplification scanning processing system and method based on light field regulation and control

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Embodiment 1

[0046] Such as figure 2 As shown, a kind of multi-beam laser amplification scanning processing method based on light field regulation provided by the present invention comprises the following steps:

[0047] Step 1, use the computational holographic algorithm to generate a hologram of the specified target light field distribution, such as Figure 5 shown, and the hologram is loaded onto the spatial light modulator 8 or the digital micromirror device; the calculation holographic algorithm of the present embodiment, the spatial light modulator 8 or the digital micromirror device are controlled by the computer 6;

[0048] The computational holographic algorithm shown in step 1 is an iterative Fourier transform algorithm, such as GS algorithm, GSW algorithm, ORA algorithm, and MRAF algorithm.

[0049] The spatial light modulator 8 loaded with the hologram in step 1 can regulate the amplitude, phase and polarization state of the light beam; the digital micromirror device loaded w...

Embodiment 2

[0061] Such as image 3 As shown, a kind of multi-beam laser amplification scanning processing method based on light field regulation provided by the present invention comprises the following steps:

[0062] Step 1, use the computational holographic algorithm to generate a hologram of the specified target light field distribution, such as Figure 5 As shown, the corresponding laser shaping beam splitter 10 is processed by using the hologram, and the laser shaping beam splitter 10 with different target light field distributions can be processed by different holograms. The computational holographic algorithm of this embodiment is generated by the computer 6;

[0063] Step 2, inject the laser light emitted by the laser 1 into the beam expander 14 through the λ / 2 wave plate 13 for beam expansion, the beam diameter after beam expansion is not larger than the size of the laser shaping beam splitter 10, and then the expanded beam Incident to the laser shaping beam splitter 10 at an ...

Embodiment 3

[0067] Such as Figure 4 As shown, the present invention provides a multi-beam laser amplification and scanning processing method based on light field regulation, comprising the following steps:

[0068] Step 1, use the computational holographic algorithm to generate a hologram of the specified target light field distribution, such as Figure 5 shown, and the hologram is loaded onto the spatial light modulator 8 or the digital micromirror device; the calculation holographic algorithm of the present embodiment, the spatial light modulator 8 or the digital micromirror device are controlled by the computer 6;

[0069] Step 2, inject the laser light emitted by the laser 1 into the beam expander 14 through the λ / 2 wave plate 13 for beam expansion, and the beam diameter after beam expansion is not larger than the size of the working panel of the spatial light modulator 8 or the digital micromirror device, Then, the expanded light beam is incident on the spatial light modulator 8 or...

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Abstract

The invention provides a multi-beam laser amplification scanning processing system and method based on light field regulation and control. The method comprises the following steps: expanding emitted laser; modulating the expanded laser by using a hologram to obtain multi-beam laser with preset light field distribution; carrying out energy amplification on the multi-beam laser to obtain high-powermulti-beam laser; and controlling high-power multi-beam laser to scan and process a workpiece to be processed. The multi-beam laser amplification scanning processing system and method based on light field regulation and control can flexibly regulate and control light beams and carry out power amplification, can realize high-precision, high-quality, high-efficiency and infinite-amplitude laser processing, and have wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of laser amplification and laser application, in particular to a multi-beam laser amplification scanning processing system and method based on light field regulation. Background technique [0002] Due to the characteristics of high precision, high quality, wide range of processable materials, and no tool wear, laser processing is widely used in aerospace, automotive and shipbuilding, electronic communications, and biomedical fields. With the continuous development of laser technology, many processing occasions often need to process large-area group holes of various shapes and quantities, such as melt-blown cloth spinnerets, turbine blade air film holes, etc. All have higher requirements, but also require higher overall processing efficiency. However, current laser processing often uses single-point Gaussian light for processing, which has disadvantages such as low processing efficiency, low energy utilizati...

Claims

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Application Information

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IPC IPC(8): B23K26/06B23K26/082B23K26/382B23K26/062
CPCB23K26/06B23K26/062B23K26/082B23K26/382
Inventor 闵超庆孙涛王文君梅雪松运侠伦孙铮孙孝飞
Owner XI AN JIAOTONG UNIV
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