Diffractive optics for laser welding and bonding

John Barnett Hammond; Eric G. Johnson; Charles S. Koehler; Jared D. Stack; Thomas J. Suleski; Aravinda Kar; Wen Guo

doi:10.1117/12.349328

1 June 1999 Diffractive optics for laser welding and bonding

John Barnett Hammond, Eric G. Johnson, Charles S. Koehler, Jared D. Stack, Thomas J. Suleski, Aravinda Kar, Wen Guo

Proceedings Volume 3633, Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI; (1999) https://doi.org/10.1117/12.349328
Event: Optoelectronics '99 - Integrated Optoelectronic Devices, 1999, San Jose, CA, United States

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.

Citation Download Citation

John Barnett Hammond, Eric G. Johnson, Charles S. Koehler, Jared D. Stack, Thomas J. Suleski, Aravinda Kar, and Wen Guo "Diffractive optics for laser welding and bonding", Proc. SPIE 3633, Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI, (1 June 1999); https://doi.org/10.1117/12.349328

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available