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Proceedings Paper

A novel high-power two-beam laser interference marking system
Author(s): Yun Zhou; Heng Zhang; Linsen Chen
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Paper Abstract

A novel high-power two-beam laser interference marking system is proposed. It is used to mark diffractive optical variable image on the surface of the glazed work piece directly. A high-power laser beam is split into two beams with equal energy. They are focused to form a spot composed of interference light field. The experimental results show that periodic micro-grating structure can be achieved with a single shot of laser ablation. Diffractive optical variable image, which is composed of micro-grating structures with different directions and different periods, has diffractive chromatic dispersion effects under the illumination of white light. The wavelength of the laser is 527nm. The energy of the single-pulse laser is 1.0mJ@20ns 20ns. The materials can be the stainless steel, the chromium film and other metals. The experimental results have been given.

Paper Details

Date Published: 6 February 2008
PDF: 8 pages
Proc. SPIE 6823, High-Power Lasers and Applications IV, 68231H (6 February 2008); doi: 10.1117/12.768631
Show Author Affiliations
Yun Zhou, Soochow Univ. (China)
Heng Zhang, Soochow Univ. (China)
Linsen Chen, Soochow Univ. (China)

Published in SPIE Proceedings Vol. 6823:
High-Power Lasers and Applications IV
Dianyuan Fan; Robert F. Walter, Editor(s)

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