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Proceedings Paper

Diffractive optics for laser welding and bonding
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Paper Abstract

Standard laser welding practices are limited by the intensity profile of the beam and spot size. The introduction of Diffractive Optical Elements (DOE) to the welding process allows for new beam shapes that are better suited to the welding process. A particular problem in laser welding is the joining of dissimilar materials. Because these materials have different material properties including different melting temperatures, it is difficult to synchronize the welding process using a single spot. Additionally, significant thermal stresses are introduced by the welding process because of the keyhole weld shape formed by a gaussian beam. By using a power splitting DOE, two spots of unequal intensity distributions may be projected onto each side of the weld joint. This paper discusses the use of DOEs in laser welding and joining of dissimilar materials. Results are presented from the testing of several candidate aerospace materials.

Paper Details

Date Published: 1 June 1999
PDF: 8 pages
Proc. SPIE 3633, Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI, (1 June 1999); doi: 10.1117/12.349328
Show Author Affiliations
John Barnett Hammond, Digital Optics Corp. (United States)
Eric G. Johnson, Digital Optics Corp. (United States)
Charles S. Koehler, Digital Optics Corp. (United States)
Jared D. Stack, Digital Optics Corp. (United States)
Thomas J. Suleski, Digital Optics Corp. (United States)
Aravinda Kar, CREOL/Univ. of Central Florida (United States)
Wen Guo, CREOL/Univ. of Central Florida (United States)

Published in SPIE Proceedings Vol. 3633:
Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI
Ivan Cindrich; Sing H. Lee; Richard L. Sutherland, Editor(s)

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