Numerical simulation of heat accumulation effects with different repetition rate pulse laser

被引：0
|
作者：
Zhou, Jie [1 ]
Li, Zewen [1 ]
Han, Bing [2 ]
Shen, Zhonghua [1 ]
Ni, Xiaowu [1 ]
Lu, Jian [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Sci, Nanjing 210094, Jiangsu, Peoples R China
[2] Nanjing Univ Sci & Technol, Laser Mat Interact Lab, Adv Launching Coinnovat Ctr, Nanjing 210094, Jiangsu, Peoples R China
来源：
AOPC 2015: MICRO/NANO OPTICAL MANUFACTURING TECHNOLOGIES; AND LASER PROCESSING AND RAPID PROTOTYPING TECHNIQUES | 2015年 / 9673卷
关键词：
heat accumulation effect; pulse laser train; repetition rate; temperature field; DAMAGE;
D O I：
10.1117/12.2202823
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
To investigate the heat accumulation effect of the laser pulse train, a two dimensional finite element calculation model is established to calculate the temperature field of Aluminum target based on the Fourier heat transfer theory. Take account of the influence of the repetition rate of laser, four different repetition rates (5 kHz, 10 kHz, 50 kHz and 1 MHz) pulse laser train and continuous wave (CW) laser are analyzed in this study. The results indicate that under the same average power and irradiation time, the peak temperature and accumulative temperature increase with the decrease of the repetition rate. With the increase of the repetition rate, the heat accumulation effect is more closer to the CW laser. The heat accumulation effect of pulse laser train with lower repetitive rate is better.
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页数：7
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