Laser marking UDI compliant information on medical tools and devices has improved through the use of new ultrafast (pico and femto) lasers. These new lasers have very short pulse widths which almost eliminates the heat-affected zone in metals, plastics, ceramic, and glass. As a result, they can do what nanosecond lasers cannot, eliminating post-processing, raised edges, and discoloration in processed materials. These types of markings on metal are completely smooth, durable, the surface maintains much of the original chromium oxide layer, and does not diminish a metal’s corrosion resistance.
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