1. 1) I. Miyamoto, K. Mori, and H. Maruo: Properties of Plasma Plume Induced on CO2 Laser Welding Thin Sheets, Quarterly Journal of The Japan Welding Society, 13-2, (1995), 211-217. (in Japanese)
2. 2) A. Poueyo-Verwaerde, R. Fabbro, G. Deshors, A. M. de Frutos, and J. M. Orza: Experimental study of laser-induced plasma in welding conditions with continuous CO2 laser, Journal of Applied Physics, 74, (1993), 5773-5780
3. 3) A. Matsunawa, S. Katayama and T. Ohnawa: Spectroscopic Measurements of Laser Induced Plume and Energy Dissipation Process of Incident Beam in Plume, Preprint of the National meeting of J.W.S, 48, (1991), 106. (in Japanese)
4. 4) Y. Kawahito, Y. Kinoshita, N. Matsumoto, M. Mizutani and S. Katayama: Interaction between Laser Beam and Plasma/Plume Induced in Welding of Stainless Steel, Quarterly Journal of The Japan Welding Society, 25-3, (2007), 461-467. (in Japanese)
5. 5) Y. Kawahito, K. Kinoshita, S. Katayama, S. Tsubota and T. Ishide: Visualization of Interaction between Fiber Laser Beam and Laser-Induced Plume, Journal of Japan Laser Processing Society, 13-1, (2006), 41-47. (in Japanese)