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Proceedings Paper

Pulsed UV image amplification for programmable laser marking
Author(s): Thierry Lamarque; Ralf Nicolaus; Brigitte Loiseaux; Jean-Pierre Huignard; Jingjun Xu
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Paper Abstract

We present a novel technique for engraving 2D patterns in one step with a UV pulsed laser by means of a versatile programmable approach. The spatial light modulation is actually performed by a reflective liquid crystal display instead of a mask. As these devices are unable to withstand the high energy throughput required for etching, the modulated beam is amplified by two-wave mixing in a nonlinear optical medium such as lithium niobate crystal optimized for the UV interaction. This technique provides a faster and more flexible alternative to laser marking with pixel by pixel raster-scan or fixed mask projection mode and e.g. can be applied to identify valuable items by imprinting a code onto the surface.

Paper Details

Date Published: 19 November 2003
PDF: 2 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.524899
Show Author Affiliations
Thierry Lamarque, Thales Research & Technology (France)
Ralf Nicolaus, Technische Univ. Darmstadt (Germany)
Brigitte Loiseaux, Thales Research & Technology (France)
Jean-Pierre Huignard, Thales Research & Technology (France)
Jingjun Xu, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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