Knowledge Management System of Institue of Mechanics, CAS
| Research on Q-Switched Nd : YAG laser engraving | |
Gao H(高宏) ; Luo GX(罗耕星); Yu K(于可); Chen GN(陈光南)
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| Source Publication | Laser Techniques for Surface Science III, Proceedings of SPIE Volume: 3272, Hai-Lung Dai; Hans-Joachim Freund, Editors |
| 1998 | |
| Pages | 126-132 |
| Conference Name | Conference on Laser Techniques for Surface Science III |
| Conference Date | 1998 |
| Conference Place | SAN JOSE, CA |
| Abstract | IN this paper, the engraving process with Q-Switched Nd:YAG laser is investigated. High power density is the pre- requisition to vapor materials, and high repetition rate makes the engraving process highly efficient. An acousto- optic Q-Switch is applied in the cavity of CW 200 W Nd:YAG laser to achieve the high peak power density and the high pulse repetition rate. Different shape craters are formed in a patterned structure on the material surface when the laser beam irradiates on it by controlling power density, pulse repetition rate, pulse quantity and pulse interval. In addition, assisting oxygen gas is used for not only improving combustion to deepen the craters but also removing the plasma that generated on the top of craters. Off-focus length classified as negative and positive has a substantial effect on crater diameters. According to the message of rotating angle positions from material to be engraved and the information of graph pixels from computer, a special graph is imparted to the material by integrating the Q- Switched Nd:YAG laser with the computer graph manipulation and the numerically controlled worktable. The crater diameter depends on laser beam divergence and laser focal length. The crater diameter changes from 50 micrometers to 300 micrometers , and the maximum of crater depth reaches one millimeter. |
| WOS ID | WOS:000074381100017 |
| ISBN | 9780819427113 |
| Indexed By | CPCI-S |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/22566 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Gao H(高宏) |
| Recommended Citation GB/T 7714 | Gao H,Luo GX,Yu K,et al. Research on Q-Switched Nd : YAG laser engraving[C]Laser Techniques for Surface Science III, Proceedings of SPIE Volume: 3272, Hai-Lung Dai; Hans-Joachim Freund, Editors,1998:126-132. |
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