Research of the superposed pulsed Nd:YAG laser in a single beam
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1.
National Engineering Research Center for Laser Processing, Huazhong University of Science and Technology, Wuhan 430074, China
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Corresponding author:
ZHU Xiao, zx@mail.hust.edu.cn
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Received Date:
2015-04-21
Accepted Date:
2015-04-30
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Abstract
In order to get high energy long pulse and high peak power short pulse in one laser at the same time, coaxial superimposed pulse laser output with two characteristics was obtained in a single laser by using different gain areas of the same working material. The results show that by using potassium titanyl phosphate electro-optical Q-switch with high resistivity, the superimposed pulse with long pulsewidth of 10ms and short pulsewidth of 63ns is gotten in bi-xenon lamp pumped pulse Nd:YAG laser (cavity length of 840mm, double flat-flat cavity structure and working material length of 150mm). With pump frequency of 9Hz, peak power of 46.7kW, mean power of 93.4W and envelope energy of superimposed pulse of 10.4J were obtained. The experiment results show that the superimposed pulse laser output can reach the demands of laser drilling.
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References
|
[1]
|
SCHULZ W, EPPELT U, POPRAWE R. Review on laser drilling Ⅰ. Fundamentals, modeling, and simulation[J]. Journal of Laser Applications, 2013, 25(1):012006. |
|
[2]
|
ASHKENASI D, KASZEMEIKAT T, MUELLER N, et al. Laser trepanning for industrial applications[J]. Physics Procedia, 2011, 12(1):323-331. |
|
[3]
|
SCHULZ W, EPPELT U. The theory of laser materials processing[M]. Berlin, Germany:Springer Group, 2009:129-165. |
|
[4]
|
BRAJDIC M, WALTHER K, EPPELT U. Analysis of laser drilled deep holes in stainless steel by superposed pulsed Nd:YAG laser radiation[J]. Optics and Lasers in Engineering, 2008, 46(9):648-655. |
|
[5]
|
DAI G, LU J, NI X W, et al. Experiment of long pulse high energy laser drilling on silica glass[J]. Optics and Precision Engineering, 2011, 19(2):380-386. |
|
[6]
|
SOLOKHIN S A, SIROTKIN A A, GARNOV S. Diode pumped Nd:YAG laser with active Q-switching and mode locking for hole drilling[J]. Laser Physics, 2011, 21(6):1145-1149. |
|
[7]
|
LEHANE C, KWOK H S. Enhanced drilling using a dual-pulse Nd:YAG laser[J]. Applied Physics, 2001, A73(1):45-48. |
|
[8]
|
WANG X D, MICHALOWSKI A, DAUSINGER F, et al. Double-pulse technique for short pulse laser drilling[J]. Laser Technology, 2009, 33(3):283-286 (in Chinese). |
|
[9]
|
WANG X. Ablation mechanisms of double nanosecond pulses laser drilling[C]//Photonics and Optoelectronics (SOPO) 2012 Symposium. New York, USA:IEEE, 2012:1-2. |
|
[10]
|
WALTHER K, BRAJDIC M, WAWERS W.Tailored light 2[M]. Berlin, Germany:Springer Group, 2011:365-393. |
|
[11]
|
WALTHER K, BRAJDIC M, KREUTZ E W. Enhanced processing speed in laser drilling of stainless steel by spatially and temporally superposed pulsed Nd:YAG laser radiation[J]. The International Journal of Advanced Manufacturing Technology, 2008, 35(9/10):895-899. |
|
[12]
|
ARRIZUBIETA I, LAMIKIZ A, MARTNEZ S, et al. Internal characterization and hole formation mechanism in the laser percussion drilling process[J]. International Journal of Machine Tools and Manufacture, 2013, 75(12):55-62. |
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