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Dynamic Adjustable Ring Beam Transformer Based on Acousto-Optic Deflection Technology

An acousto-optic deflection and ring beam technology, applied in the laser field, can solve the problems of burnt fiber, high cost of three-clad special fiber, splashing, etc. Effect

Active Publication Date: 2022-07-29
武汉市威佳激光有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a dynamic adjustable annular beam conversion device based on acousto-optic deflection technology, which can realize any adjustable distance between the center and the annular spot while realizing the annular spot beam. At the same time, it can also realize multi-ring composite spot transformation, which not only solves the problem of bubbles and spatters in the traditional laser high-speed welding process, but also avoids the problems of high cost and complicated manufacturing process of triple-clad special optical fibers. Laser energy coupling is a problem of loss and burning. The wind direction of the bad fiber can meet the spot customization of different laser processing needs

Method used

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  • Dynamic Adjustable Ring Beam Transformer Based on Acousto-Optic Deflection Technology
  • Dynamic Adjustable Ring Beam Transformer Based on Acousto-Optic Deflection Technology
  • Dynamic Adjustable Ring Beam Transformer Based on Acousto-Optic Deflection Technology

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Experimental program
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Effect test

Embodiment 1

[0044] figure 1 It is the structure diagram of the device of Embodiment 1, including: cylindrical sleeve 1, hollow connecting rod 2, hollow motor, outer electrode connector 4, inner electrode connector 5, acousto-optic deflector 6, acousto-optic drive power source 7, barrel 8, the rotor 9 of the hollow motor, the stator 10 of the hollow motor, the acousto-optic deflector control line 11, the incident collimated laser 12, the 0-order output laser 13, the first-order diffracted laser 14, and the bearing pair 15.

[0045] like figure 2 As shown, the incident collimated laser 12 is incident on the acousto-optic crystal through the center of the hollow connecting rod, and under the action of the acousto-optic deflector 6, the 0th-order output laser and the 1st-order diffracted laser are generated, and the deflection angle between the diffracted beams is determined by the acousto-optic deflector 6. The frequency control of the ultrasonic field provided by the light drive power sup...

Embodiment 2

[0055] The device structure of Embodiment 2 is the same as that of Embodiment 1, and the main difference lies in the transformation of the shape of the output light spot. In Embodiment 1, the output light spot is a composite light spot of a circular light spot and a single annular light spot. In Embodiment 2, the output light spot is a composite light spot of a circular light spot and a multi-ring light spot.

[0056] Figure 8 In order to generate the schematic diagram of the circular light spot and the multi-ring light spot, when the hollow motor works normally and provides power for the acousto-optic drive power 7, the acousto-optic drive power 7 is controlled by the external control circuit to provide the acousto-optic deflector 6 with two different The ultrasonic field frequency can generate two kinds of first-order diffracted lasers with different diffraction deflection angles, and the output composite spot is as follows Figure 9 shown. The frequency and input power ...

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Abstract

The invention discloses a dynamic adjustable annular beam conversion device based on acousto-optic deflection technology. While realizing the annular spot beam, the device of the present invention can realize any adjustment of the distance between the center and the annular spot, and can also realize multi-ring compound spot transformation, which not only solves the problems of bubbles and splashes in the traditional laser high-speed welding process, but also avoids the It solves the problems of high cost and complicated manufacturing process of triple-clad special fiber. The laser energy coupling is the risk of loss and burning of the fiber, which can meet the customization of the spot for different laser processing needs.

Description

technical field [0001] The invention belongs to the field of laser technology, and in particular relates to a dynamic adjustable annular beam conversion device based on acousto-optic deflection technology. Background technique [0002] Laser welding is a process in which a laser beam is irradiated onto the surface of a material, and the interaction between the laser and the material is a process in which the material is melted and connected to form an excellent welded joint. The traditional single-peak Gaussian distribution laser welding has the problem of generating pores during high-power welding, which will reduce the welding strength of the material, and it is easy to generate spatter when the battery is welded at high speed, and the spattered metal particles are prone to generate internal leakage current. cause the battery to short circuit. [0003] In order to solve the spatter problem in the welding process, Coherent Corporation of the United States has introduced a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09G02F1/11B23K26/064B23K26/073
CPCG02B27/0927G02B27/0938G02F1/113B23K26/064B23K26/0734B23K26/073
Inventor 钱晓锋阿里客谢﹒卡扎诺夫陆晓明
Owner 武汉市威佳激光有限责任公司