Laser drilling of stainless steel with nanosecond double-pulse

被引：67
|
作者：
Wang, X. D. [1 ]
Michalowski, A. [2 ]
Walter, D. [3 ]
Sommer, S. [3 ]
Kraus, M. [3 ]
Liu, J. S. [1 ]
Dausinger, F. [3 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Optoelect Sci & Engn, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
[2] Univ Stuttgart, IFSW, D-70569 Stuttgart, Germany
[3] Forsch Gesell Strahlwerkzeuge mbH, D-70569 Stuttgart, Germany
来源：
OPTICS AND LASER TECHNOLOGY | 2009年 / 41卷 / 02期
关键词：
Laser drilling; Double-pulse; Pulse shaping; INDUCED BREAKDOWN SPECTROSCOPY; ND-YAG LASER; ABLATION; PLASMA; SAMPLES; SINGLE; ENHANCEMENT; DYNAMICS; MODEL; STATE;
D O I：
10.1016/j.optlastec.2008.05.021
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：148 / 153
页数：6
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