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Lasers & Sources

UV Marking without Thermal Damage of Material

AMS Technologies has announced diode-pumped frequency-multiplied solid state UV lasers for UV marking without thermal damage. The laser module of the 35XX series provides an output power of up to 3 W at 355 nm with a repetition rate of 30 kHz. UV lasers can mark plastic materials, as typically used in medical technologies, via a photochemical or photo-bleaching process. Unlike marking made by NIR or IR lasers, the so called 'cold' marking process via an UV laser does not thermally damage the material. The marking becomes therefore a permanent part of the material and remains for the whole life and operating time of devices. Compared to traditional print processes there is no need to use inks or solvents. The UV laser beam can be focused to spot sizes of a few microns, enabling high resolution and very small sized markings.