发明名称 |
METHOD OF CONTROLLING HOLE SHAPE DURING ULTRAFAST LASER MACHINING BY MANIPULATING BEAM POLARIZATION |
摘要 |
A method for controlling the shape of the area machined by a pulse of laser light on a surface, such that the shape has a desired elliptical shape with its major axis aligned in a desired direction and the length of this major axis is less than or equal to a diameter of a beam spot. The pulse is generated and focused to the beam spot within a target area. The polarization of the pulse is adjusted to be elliptically polarized with an axis of the polarization ellipse oriented in the desired direction. The ellipticity of the polarization of the pulse is adjusted such that the pulse of laser light has contours of constant machining capacity on the workpiece surface, which have a similar shape to the desired shape. The fluence of the pulse light is controlled such that the area machined by the pulse is substantially the desired shape. |
申请公布号 |
WO2005092561(A3) |
申请公布日期 |
2006.01.05 |
申请号 |
WO2005US08415 |
申请日期 |
2005.03.14 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO, LTD.;LI, MING |
发明人 |
LI, MING |
分类号 |
B23K26/073;B81C99/00 |
主分类号 |
B23K26/073 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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