Micro brands manufacturing by copper vapor laser

Mikhail Nikontchouk; Igor V. Polyakov; Sergey Gorny

doi:10.1117/12.443035

1 October 2001 Micro brands manufacturing by copper vapor laser

Mikhail Nikontchouk, Igor V. Polyakov, Sergey Gorny

Proceedings Volume 4559, MEMS Components and Applications for Industry, Automobiles, Aerospace, and Communication; (2001) https://doi.org/10.1117/12.443035
Event: Micromachining and Microfabrication, 2001, San Francisco, CA, United States

Abstract

The manuscript presents the results of research of different processes of micro brands (identification marks) manufacturing. Two methods are taken into consideration, namely, the projection method and the method based on making brand by deep laser marking. These manufacturing methods are compared in terms of their accuracy, manufacturing flexibility and efficiency. There are a lot of micro brand manufacturing processes and one of them is laser deep marking. In this paper we consider brand manufacturing by Copper vapor lasers and compare it with well-known Nd:YAG laser. A copper vapor laser has a diffraction-limited divergence, a short pulse, and a high repetition rate. These properties enable an efficient evaporation of any material with a very small heat affected zone and with a minimal amount of the melted material. In the projection method a copper vapor laser cuts a mask of 0.15 mm copper foil. The mask image being projected to a material surface is five times less than the original mask. A pulse solid-state laser illuminating the mask evaporates the exposed material. An impact tool for brand stamping is made of steel by precision deep (0.5 mm) marking using a copper vapor laser. A laser beam 10 mm in diameter is deflected by electromechanical scanners and evaporates material layer by layer at the raster movement. Copper vapor laser marking makes possible the direct manufacturing of brands on gold surfaces at 0.5 mm depth with 10 mm accuracy as well.

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Mikhail Nikontchouk, Igor V. Polyakov, and Sergey Gorny "Micro brands manufacturing by copper vapor laser", Proc. SPIE 4559, MEMS Components and Applications for Industry, Automobiles, Aerospace, and Communication, (1 October 2001); https://doi.org/10.1117/12.443035

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KEYWORDS

Copper vapor lasers

Photomasks

Laser marking

Manufacturing

Nd:YAG lasers

Digital signal processing

Metals

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