Share Email Print
cover

Proceedings Paper

Shadowgraphic imaging of metal drilling with a long pulse excimer laser
Author(s): Aart Schoonderbeek; Cornelis A. Biesheuvel; Ramon M. Hofstra; Klaus-Jochen Boller; Johan Meijer
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A shadowgraphic imaging technique is used for studying the interaction between the laser beam and the material during laser drilling. The used laser is a XeCl excimer laser with a nearly diffraction limited beam and 175 ns pulse length. We studied how and when the material is removed. Holes are drilled with a series of pulses in aluminum and Hastelloy X. The shadowgraphic images show the development of a shockwave whose expansion is in agreement with theory. Both the removal of material at different times after the start of the laser pulse and the material removal for different pulses during the drilling process are shown. Material removal occurs by vaporization as well as melt ejection. Our experiments show the same amount of removed material for drilling with different cover gases. The shadowgraphic images show that the larger part of the material is removed after the end of the laser pulse.

Paper Details

Date Published: 18 November 2003
PDF: 6 pages
Proc. SPIE 5063, Fourth International Symposium on Laser Precision Microfabrication, (18 November 2003); doi: 10.1117/12.540741
Show Author Affiliations
Aart Schoonderbeek, Nederlands Ctr. voor Laser Research B.V. (Netherlands)
Univ. Twente (Netherlands)
Cornelis A. Biesheuvel, Nederlands Ctr. voor Laser Research B.V. (Netherlands)
Ramon M. Hofstra, Nederlands Ctr. voor Laser Research B.V. (Netherlands)
Klaus-Jochen Boller, Nederlands Ctr. voor Laser Research B.V. (Netherlands)
Univ. Twente (Netherlands)
Johan Meijer, Nederlands Ctr. voor Laser Research B.V. (Netherlands)
Univ. Twente (Netherlands)


Published in SPIE Proceedings Vol. 5063:
Fourth International Symposium on Laser Precision Microfabrication
Isamu Miyamoto; Andreas Ostendorf; Koji Sugioka; Henry Helvajian, Editor(s)

© SPIE. Terms of Use
Back to Top