The introduction of the high power fiber laser with brilliant beam quality has enabled the rapid development of remote laser welding (RLW). This paper presents a theoretical review of remote laser welding. As a promising technology, RLW offers increased flexibility, high operational speed, and reduced cycle time to process a wide range of workpieces. This study presents the typical characteristics of RLW with high power fiber lasers. It also investigates the influence of process parameters such as laser power, welding speed, shielding gas supply, beam inclination and focal position on the weld seam quality.
 G. Tsoukantas, A. Stournaras and G. Chryssolouris, “Ex perimental Investigation of Remote Laser Welding with CO2 and Nd: YAG Laser-Based Systems,” Journal of Laser Applications, Vol. 20, No. 1, 2008, pp. 50-58. doi:10.2351/1.2832400
 G. Tsoukantas and G. Chryssolouris, “Theoretical and Experimental Analysis of the Remote Welding Process on Thin, Lap-Joined AISI 304 Sheets,” International Journal of Advanced Manufacturing Technology, Vol. 35, No. 9 10, 2008, pp. 880-894. doi:10.1007/s00170-006-0767-0
 F. Oefele, J. Musiol and M. F. Zaeh, “Influence of Re mote-Laser-Welding Parameters for an 8 kW Fibre Laser on Seam Quality of Steels,” The 27th International Con gress on Applications of Lasers & Electro-Optic (ICALEO 2008), Temecula, 2008, pp. 399-405.
 C. Kim, J. Kim, H. Lim and J. Kim, “Investigation of Laser Remote Welding Using Disc Laser,” Journal of Ma terials Processing Technology, Vo. 201, No. 1-3, 2008, pp. 521-525. doi:10.1016/j.jmatprotec.2007.11.165
 S. Kenji, Y. Motomichi, M. Kenta, Y. Daisuke, K. Yusuke and O. Takuya, “Development of Remote Laser Welding Method Using Long Focal-Distance Lens for Automobile Galvannealed Steel,” Transactions of the Japan Welding Society, Vol. 27, No. 2, 2009, pp. 60-63. doi:10.2207/qjjws.27.60s
 K. Klingbeil, “What You Need to Know about Remote Laser Welding: A Look at How Remote Laser Welding Works and How It Can Be Applied to Your Manufactur ing Process,” Welding Journal, Vol. 85, No. 8, 2006, pp. 44-46.
 E. Beyer, A. Klotzbach, V. Fleischer and L. Morgenthal, “Nd: YAG-Remote Welding with Robots,” Proceedings of the Second International WLT-Conference on Lasers in Manufacturing, Munich, 2003, pp. 367-373.
 M. F. Zaeh, U. Munzert and F. Oefele, “Robot Based Remote-Laser-Welding without Scanner Optics,” Pro ceedings of the Fourth International WLT-Conference on Lasers in Manufacturing, Munich, 2007, pp. 1-8.
 D. A. Sabo, “The Evolution of Scanners for Remote Welding Applications: The Rise of Beam Quality Leads to Proliferation of Remote Welding Applications,” 2007. http://www.thefabricator.com/article/lasercutting/the-evolution-of-scanners-for-remote-welding-applications
 M. F. Zaeh, J. Musiol and J. Moesl, “Methodical Qualification of Scanner Systems for Remote Laser Cutting,” Proceedings of the 29th International Congress on Ap plications of Laser & Electro-Optics, Orlando, 26-30 Sep tember 2010, pp. 362-370.
 Scansonic, “Remote Laser Welding—Adaptive,” 2011. http://www.scansonic.de/files/downloads/scansonic_rlw-a_datasheet_v2.0_en.pdf
 L. Quintino, A. Costa, R. Miranda, D. Yapp, V. Kumar and C. J. Kong, “Welding with High Power Fiber Laser— A Preliminary Study,” Materials and Design, Vol. 28, No. 4, 2007, pp. 1231-1237. doi:10.1016/j.matdes.2006.01.009
 A. Kratky, D. Schuocker and G. Liedl, “Processing with kW Fiber Lasers—Advantages and Limits,” XVII Inter national Symposium on Gas Flow, Chemical Lasers and High-Power Lasers, 21 April 2009. doi:10.1117/12.816655
 M. Lütke, A. Mahrle, T. Himmer, L. Morgenthal and E. Beyer, “Remote Cutting—A Smart Solution Using the Advantages of High Brightness Lasers,” Proceedings of the International Congress on Applications of Lasers & Electro-Optics, Temecula, 20-23 October 2008, pp. 695 702.
 Duggan Manufacturing, “New Process Development Fa cility for Remote Fiber Laser Welding,” 2010. http://weldingdesign.com/equipment-automation/news/process-development-facility-remote-fiber-laser-0313/
 J. Hatwig, G. Reinhart and M. F. Zaeh, “Automated Task Planning for Industrial Robots and Laser Scanners for Remote Laser Beam Welding and Cutting,” Production Engineering: Research and Development, Vol. 4, No. 4, 2010, pp. 327-332. doi:10.1007/s11740-010-0252-3
 L. X. Zhang, L. Wu, H. M. Gao and G. J. Zhang, “Agent Based Modeling and Control of Remote Robotic Welding System,” Robotic Welding, Intelligence and Automation, Vol. 362, 2007, pp. 187-194. doi:10.1007/978-3-540-73374-4_21
 K. Krastel, “Remote Laser Welding in Industrial Appli cations,” 2006. http://www.photonics.com/Article.aspx?AID=26648
 S. Katayama, S. Oiwa, N. Matsumoto, M. Mizutani and Y. Kawahito, “Fundamentals of Fiber Laser Remote Wel ding and Deep Penetration Welding,” European Quantum Electronics Conference on Lasers and Electro-Optics, Mu nich, 14 19 June 2009, p. 1.
 L. Hartwig, R. Ebert, S. Kloetzer, S. Weinhold, J. Dre chsel, F. Peuckert, J. Schille and H. Exner, “Material Processing with a 3 kW Single Mode Fiber Laser,” Jour nal of Laser Micro/Nanoengineering, Vol. 5, No. 2, 2010, pp. 128-133.