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A 2 kW diffusion cooled CO:! slab laser, designated the DC020, has recently been launched by Roiin-Sinar Laser.
The laser is the result of a project which aimed at developing a new generation of high power CO2 lasers. Due to their fundamental design principles, these lasers were intended to have significant advantages over flowing gas lasers and, in addition, offer high beam quality.
According to Hinrich Martinen, Technical Director at Rolin-Sinar Laser, 'To open up the market for laser processing systems in the future, new ways have been found to make integration into existing production lines as simple as possible and to reduce operating costs considerably.'
The slab design produces a
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&ward of Prizes,--The Annales des Ponts et Chaussdes, for Jan., 1877, announces the following awards, made Dec. 16, 1876, to the authors of the best memoirs published in the Annales in 1874, viz. : Gold medal of 600 francs to M. Hirsch, for his " Theory of aerothermie engines." Three gold medals o