激光束焊接
焊接
激光器
制作
材料科学
光学
补偿(心理学)
梁(结构)
光电子学
计算机科学
物理
复合材料
病理
精神分析
替代医学
医学
心理学
作者
Yannick Bourgin,Falk Nagel,Patrick Feßer,Jean Pierre Bergmann,Stefan Sinzinger
摘要
Laser welding by means of multi-kilowatt solid state lasers can be considerably improved if the focused welding spot is embedded in a pre-heating spot generated e.g. by an additional laser. To improve the compactness of the optical system, the same functionality can be effectively achieved by means of diffractive diffusers. Because such a diffractive optical solution may suffer from the presence of speckles, a comprehensive characterization of the laser source is performed. The paper includes the design, the compensation of the difference in the intensity levels, the fabrication and the optical performances of the fabricated DOEs. We furthermore present the functionality of the DOEs in the welding process.
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