Laser processing optimization method and system of Bessel beams

A Bessel beam and laser processing technology, applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as large side lobe effects, improve processing effect, optimize Bessel spot, improve precision and The effect of craft effect

Active Publication Date: 2019-03-29
WUHAN HGLASER ENG CO LTD
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[0003] The purpose of the invention is to overcome the problem that

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  • Laser processing optimization method and system of Bessel beams
  • Laser processing optimization method and system of Bessel beams
  • Laser processing optimization method and system of Bessel beams

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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than in...

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Abstract

The invent belongs to the technical field of laser processing, and particularly provides a laser processing optimization method and system of Bessel beams. Through a method that a phase position plateis introduced, reshaping is performed on the Bessel beams generated by a conical lens, side lobes of the Bessel beams can be successively inhibited, then Bessel light spots after focusing are optimized, so that the processing effect of laser on glass and sapphire is improved, the laser processing precision and the process effect are improved, and the side lobe strength is lowered to be smaller than 1% to the minimum from at most 16%; and besides, due to the design of different phase position plates, the balance of the two indexes of focus depth and side lobe light intensity distribution can be achieved, and therefore the requirement of more different laser micro processing process requirements is met.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and in particular relates to a laser processing optimization method and system for a Bessel beam. Background technique [0002] The central spot of a traditional Bessel beam has the property of a non-diffraction beam during propagation, but according to the different refraction angles, the distance of this non-diffraction is also limited. If a certain proportion of scaling is performed according to this section of the area, you can get a certain "non-diffraction" beam transmission distance along the z-axis direction for different needs, which is called the depth of focus. When using this depth of focus to process on transparent materials Thin and slender cuts can be achieved. The ability of the Bessel beam itself can get quite good results in cutting quality and sidewall morphology, coupled with the self-focusing and nonlinear Kerr effect of ultrafast lasers, it helps to scatter and acc...

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Application Information

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IPC IPC(8): B23K26/06B23K26/046
CPCB23K26/046B23K26/06
Inventor 王建刚王雪辉张义程伟李国栋李曾卓成迎虹
Owner WUHAN HGLASER ENG CO LTD
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