Lincoln Laser Company (Phoenix, AZ) has introduced the KW Series polygonal laser scanner for material processing applications. The scanner uses a solid copper polygonal mirror that rotates to allow the laser beam to transfer rapidly from facet to facet, minimizing dwell time. It can handle beam power densities of 1,000 watts per square millimeter and can achieve active scan angles of greater than 120 degrees or scan rates of over 10 KHz, depending on the mirror/motor combination. The copper substrate acts as a large heat sink, drawing heat away from the mirror facets.
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