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Polygonal Scanners

Photonics Spectra
Jun 2010
Lincoln Laser, now part of Cambridge TechnologyRequest Info
 
Lincoln Laser Co.’s KW Series polygonal laser scanners feature copper mirrors for materials processing applications using high-energy laser sources. When galvanometer mirrors are enlarged to compensate for high-power lasers, the scan rate slows down. The polygonal scanners dissipate heat more efficiently and produce faster scan rates because the copper substrate acts as a large heat sink that draws heat away from the mirror facets. Additional heat dissipation occurs as the polygonal mirror rotates, allowing the laser beam to transfer rapidly from facet to facet and minimizing dwell time on any single facet. The scanners accommodate beam power densities of 1000 W/mm2 and produce scan angles of >120° and scan rates of >10 kHz. They can be custom designed to meet thermal, optical, speed and accuracy requirements for lasers of all wavelengths and power levels.


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