By Christian Nölke, Matthias Gieseke, Ronny Hagemann and Stefan Kaierle Using two step laser additive manufacturing (LAM), commonly known as Selective Laser Melting, offers the opportunity to manufacture three dimensional (3D) parts. This manufacturing technique has gained a lot of attention and interest during the recent years and is of particular interest because prior computer […]
Laser Editorials
Imaging at One Trillion Frames per Second
By Ramesh Raskar and Christopher Barsi High-speed imaging is a long-standing goal in optics, with applications in spectral dynamics, motion analysis, and three-dimensional imaging. Currently, commercially available systems can offer sensors operating at one million frames per second at reduced spatial resolution.1 In the lab setting, serial time-encoding of 2D images have provided 100 ps […]
LPP-EUV Light Source Development for High Volume Manufacturing Lithography
By Hakaru Mizoguchi, Junichi Fujimoto and Takashi Saitou EUV Source System We have developed a prototype of the first HVM EUV light source having 100 kHz 20 kW CO2 laser, 20 mm in diameter droplet generator, and magnetic field debris mitigation (Fig. 1).
Origin and New Wave of Laser Welding
By Isamu Miyamoto The author started laser materials processing in 1965 with developing the CO2 laser, and since then has been involved in a variety of materials processing using CW (continuous wave) to USLP (ultrashort laser pulse). Among them laser welding has attracted a lot of the author’s interest because of its profound and interesting […]
Industrial Lasers Focus on Key Markets
By David A. Belforte We have all breathed a sigh of relief that the deep recession of 2008/09 is over and that industry has recovered. In the words of one industry association, “the sense of imminent financial contagion has ‘dialed down’ and world economies have drawn back from the brink.” Reality is that aggregate GDP […]