1994 Volume 22 Issue 11 Pages 870-879
The YAG laser has an excellent characteristic that makes beam transmission with optical fibers. In addition, the oscillator of the several kW class has been developed, and so its applications are changing largely from conventional one. The authors have adopted the high power YAG laser welding and surface treatments that uses optical fibers favorable to application to narrow, complicated areas.
In this paper, the authors showed the fundamental beam intensity distribution analysis in focusing lens, optical fiber and kaleidoscope beam homogenizer for high power YAG laser. Then, we have designed and manufactured the compact lens system, metal mirror which have high reflectivity and durability and kaleidoscope. And we also showed the beam transmission characteristics in optical fibers. In addition, on the basis of those elementary techniques, some practical applications with high power YAG laser have described.
