[B-6-2] Study on High-efficiency and High-quality Micro-welding of Copper by Superposition of 532 nm and 1064 nm Lasers 〇Shota Kawasaki1, Yasuhiro Okamoto1, Martin Ruthandi Maina1, Akira Okada1, Shin-Ichi Nakashiba2, Norio Nishi2 (1.Okayama University, 2.Kataoka Corporation) Keywords:Processing、Laser、Copper、532 nm、1064 nm