کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
733031 | 893304 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Laser drilling of stainless steel with nanosecond double-pulse Laser drilling of stainless steel with nanosecond double-pulse](/preview/png/733031.png)
Nanosecond double-pulse laser drilling is reported in this paper. The double-pulse herein represents two closely conjoint pulses with 21 ns pulse duration and about 52 ns interpulse separation, which are acquired by temporal pulse shaping. Percussion drilling with such double-pulse is performed in stainless steel samples with different laser fluences, sample's thickness, repetition rates and ambient pressures. The experimental results show that the drilling rates of double-pulse drilling are more than one order of magnitude higher than that of conventional single-pulse drilling in air. Differences in the processing results between single-pulse and double-pulse with various processing parameters are investigated. In addition the ablation mechanisms of the double-pulse drilling are discussed.
Journal: Optics & Laser Technology - Volume 41, Issue 2, March 2009, Pages 148–153