1. 1) T. Yasuoka, T. Kayahara, R. Nishii, K. Matsunaga, and T. Shigematsu: “Welding With the High Beam Quality Fiber Laser and Suppression of Welding Defects Using the Beam Mode Control Technology”, Furukawa Electric Review 138, (2019), 25. (in Japanese)
2. 2) Y. Okamoto, N. Nishi, S. Nakashiba, T. Sakagawa, and A. Okada: “Smart laser micro-welding of difficult-to-weld materials for electronic industry”, Proc. of SPIE, 9351, (2015), 935102.
3. 3) T. Kayahara, T. Tanabe, T. Yasuoka, and T. Shigematsu: “Development of fiber laser welding technology to suppress welding defects”, Yosetsu Gijutsu, 67, 11, (2019), 57. (in Japanese)
4. 4) T. Yasuoka, T. Kayahara, T. Sakai and T. Shigematsu: “Spatter suppression with beam mode control technology”, Proceedings of the 90th Laser Materials Processing Conference, (2018), 59. (in Japanese)
5. 5) E. W. Spisz, A. J. Weigand, R. L. Bowman, and J. R. Jack: “Solar absorptances and spectral reflectances of 12 metals for temperatures ranging from 300 to 500 K”, NASA Technical Note, D-5353, (1969).