研究了利用调QNd:YAG激光对硅片的激光划片,得出了刻槽深度和宽度与工艺参数之间的关系。还从理论上探讨了划片时激光束和材料的相互作用过程,推导了激光束使材料发生熔化和汽化时的能量密度阈值。
Abstract
Laser scribing of silicon wafer with a Q-switched Nd:YAG laser was studied and the relationship between process parameters and groove depth and width has been obtained. The interaction process of laser beam and material was also analyzed theoretically and equation of laser energy density threshold induced material damage was deduced.
关键词
激光划片 /
硅片 /
能量密度阈值
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Key words
laser scribing /
silicon wafer /
energy density threshold
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参考文献
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[4] S.M.Metev,V.P.Veiko.Laser-assisted microtechnology.Berlin:Springer-Verleg,1994
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[7] Alka Vshra,S.K.Bansal,R.K.Sharma,et al.Surface effects on laser-induced damage in Si.J.Phys.D:Appl.Phys.,1990,23:55~66
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脚注
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