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  • IPG Photonics Reports Laser Welding Record
Dec 2007
IPG Photonics, an Oxford, Mass., maker of high-power lasers and amplifiers, said its application center in Germany used its 20-kW fiber laser to weld nearly a meter of 1-inch-thick stainless steel at 0.85 meters/minute, and three-quarter inch stainless steel at speeds of about 2 meters a minute with a 200-µ fiber cable and a 420-µ focus spot. Laser beams were applied from both sides with a total penetration depth of 54- to 56-mm per pass. IPG said the commercial YLR-20,000 fiber laser has the potential for indoor and outdoor thick metal-based applications and others requiring deep penetration welds -- such as shipbuilding, pipelines, gas tanks, aerospace and construction -- and that as a result, lasers could replace expensive electron beam welding machines requiring a full or partial vacuum.

fiber laser
A laser in which the lasing medium is an optical fiber doped with low levels of rare-earth halides to make it capable of amplifying light. Output is tunable over a broad range and can be broadband. Laser diodes can be used for pumping because of the fiber laser's low threshold power, eliminating the need for cooling.
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
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