Keigo Matsunaga, Taro Murayama


The fiber laser has the property of a high rate and a low heat effect processing based on the performance of the high beam quality and the high power density. On the other hand, since copper has a high reflectance on oscillation wavelength of fiber laser and a high thermal conductivity, it is a difficult material for a stable welding. Furukawa Electric Co., Ltd. succeeded in high quality processing of the copper material using a fiber laser based on the ultra-fast frequency modulation technology which is irradiation with a laser modulated at high frequency and the beam mode controlling technology which can control precisely the beam intensity distribution at a focal point.

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