Device and method for ultrafast picosecond pulse laser machining of super-hydrophobicity micro-structure surface

A super-hydrophobic, ultra-fast picosecond technology, used in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of low output and high investment, and achieve the effect of low cost, simple process and green production

Inactive Publication Date: 2012-07-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the problems of high input and low output in the existing processing technology and processing technology

Method used

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  • Device and method for ultrafast picosecond pulse laser machining of super-hydrophobicity micro-structure surface
  • Device and method for ultrafast picosecond pulse laser machining of super-hydrophobicity micro-structure surface
  • Device and method for ultrafast picosecond pulse laser machining of super-hydrophobicity micro-structure surface

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specific Embodiment approach 1

[0033] Specific implementation mode one: the following combination figure 1 and figure 2 Describe this embodiment mode, the ultrafast picosecond pulse laser processing device of superhydrophobic microstructure surface described in this embodiment mode, it comprises ultrafast picosecond pulse laser source 1, optical frequency isolator 2, first mirror 3-1 , second mirror 3-2, third mirror 3-3, fourth mirror 3-4, fifth mirror 3-5, rotating liquid crystal polarizer 4, polarizing beam splitter 5, first beam collection Device 6-1, second beam collector 6-2, half-wave plate 7, first focusing lens 8, frequency doubling generator LBO crystal 10, dichroic mirror 11, light control device 12, beam profiler 13, Beam amplification component Kepler beam expander 16, focusing processing lens 17, processing platform 19, microscopic imaging CCD assembly 20 and control system 21,

[0034] The laser beam emitted by the ultrafast picosecond pulse laser source 1 is amplified by the built-in rege...

specific Embodiment approach 2

[0039] Specific implementation mode two: the following combination figure 1 Describe this embodiment, this embodiment is a further description of Embodiment 1, the beam amplification component Kepler beam expander 16 is composed of a second focusing lens 14 and a third focusing lens 15, through the fourth mirror 3- 4. The reflected light beam is expanded by the second focusing lens 14 and the third focusing lens 15 and then enters the fifth reflecting mirror 3-5.

[0040] The beam enlargement component The main purpose of the beam expander of the Kepler beam expander 16 is to increase the diameter of the beam, so that subsequent optical elements can be used to improve the quality of the beam itself. In the present invention, the beam expanded by the beam enlarger Kepler beam expander 16 should be compatible with the aperture of the focusing processing lens 17 .

specific Embodiment approach 3

[0041] Specific embodiment three: this embodiment is a further description of embodiment two, the focal length of the second focusing lens 14 is 40 mm, the focal length of the third focusing lens 15 is 100 mm, the second focusing lens 14 and the third focusing lens 15 The center distance is 140mm.

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Abstract

A device and a method for ultrafast picosecond pulse laser machining of a super-hydrophobicity micro-structure surface belong to the field of preparation of functional micro-structure surfaces, and aim to solve the problems of high investment and low output of an existing machining process and existing machining technology for functional elements. The device comprises an ultrafast picosecond pulse laser source, an optical isolator, five reflectors, a rotary liquid crystal polarizing film, a polarization beam splitter, two beam collectors, a half wave plate, a focusing lens, frequency-doubling generator LBO (lithium triborate) crystal, a dichroic mirror, a light control device, a beam profile curvometer, a beam amplifying component Kepler beam expander, a focusing machining lens, a machining platform, a microscopy imaging CCD (charge coupled device) component and a control system. The method includes the stepsof: fixing a steel workpiece onto a surface driven by a Z-directional guide rail of the machining platform; adjusting a light path; detecting the surface of the workpiece by a probe; and driving the workpiece to move by means of movement of an X-directional guide rail and a Y-directional guide rail of the machining platform. The device and the method are used for preparing the super-hydrophobicity micro-structure surface.

Description

technical field [0001] The invention relates to an ultrafast picosecond pulse laser processing device and method for superhydrophobic microstructure surfaces, belonging to the field of preparation of functional microstructure surfaces. Background technique [0002] Since the earth has life, it has gone through hundreds of millions of years of evolution. This evolution makes almost all species or material surfaces have some kind of specific function from macroscopic to microscopic. One of the very typical functional characteristics is that the surface of the structure has excellent water resistance and self-cleaning ability. Such as the wings of lepidoptera insects such as cicadas and butterflies, the leaves of cabbage, gorse, rice leaves, etc., but the most representative ones are the leaves of lotus, so this function is also called "lotus leaf effect". ". Further studies have found that the micro-nano dual structure on the surface of the material and the waxy layer and s...

Claims

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Application Information

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IPC IPC(8): B23K26/00B23K26/04B23K26/046B23K26/50
Inventor 赵清亮姜涛于欣董志伟张珊珊
Owner HARBIN INST OF TECH
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