Rofin-Sinar Inc.The Rofin Laser Macro Group has announced the DC 045W, a CO2 slab laser with an average output of 4500 W. This diffusion-cooled laser has a beam quality of K ≥ 0.9, which enables narrow and deep welding seams with minimum heat distortion. It requires no gas circulation, and its single transmitting lens is a diamond window. 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