发明授权
- 专利标题： Method of short pulse hole drilling without a resultant pilot hole and backwall damage
- 专利标题（中）： 短脉冲钻孔方法，无导致孔和后壁损坏
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申请号： US10377902申请日： 2003-03-03
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公开(公告)号： US06784400B1公开(公告)日： 2004-08-31
- 发明人: Paul S. Banks , Brent C. Stuart , Michael D. Perry
- 申请人： Paul S. Banks , Brent C. Stuart , Michael D. Perry
- 主分类号： B23K2600
- IPC分类号： B23K2600
摘要：
A method for removing material via a laser so as to reduce the formation of channels comprising the steps of emitting a laser pulse comprising a pulse energy, a pulse duration, and a fluence towards a surface of a drilling material the fluence of a value sufficient to avoid the formation of a channel in the drilling material at the surface to form a hole comprising a side wall and a bottom, shaping a spatial profile of the laser pulse such that the fluence is substantially uniform across the spatial profile; and emitting at least one subsequent laser pulse having a pulse energy, a pulse duration, and a fluence sufficient to avoid the formation of a channel at the bottom of the hole.