Enhanced drilling using a dual-pulse Nd:YAG laser

被引：68
|
作者：
Lehane, C
Kwok, HS [1 ]
机构：
[1] Hong Kong Univ Sci & Technol, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China
[2] SUNY Buffalo, Dept Elect & Comp Engn, Buffalo, NY 14260 USA
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2001年 / 73卷 / 01期
关键词：
D O I：
10.1007/s003390100819
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new method for improving the efficiency of laser drilling has been developed. Two synchronized free-running laser pulses from a tandem-head Nd:YAG laser are capable of drilling through 1/8-in-thick stainless-steel targets at a standoff distance of Im without gas-assist. The combination of a high-energy laser pulse for melting with a properly tailored high-intensity laser pulse for liquid expulsion results in the efficient drilling of metal targets. We argue that the improvement in drilling is due to the recoil pressure generated by rapid evaporation of the molten material by the second laser pulse.
引用
收藏
页码：45 / 48
页数：4
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