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Proceedings Paper

Effects of taper on drilling and cutting with a pulsed laser
Author(s): James Angell; Wen Ho; Ronald D. Schaeffer
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Paper Abstract

An inherent characteristic of laser machined features is taper. For a particular laser the degree of taper is largely dependent on two things: the type of material being machined and the laser energy per unit area or fluence at the processing surface. The latter of these is dependent on different parameters for the three lasers mentioned above. In this paper we review the particular laser parameters that control taper and what degree of taper can be expected for certain materials. More often than not taper is a nondesirable characteristic and is, in many cases, the limiting factor regarding the maximum thickness of material that a laser is practically capable of drilling or cutting through. We therefore discuss methods of minimizing taper and its effects. Under some circumstances taper can be used to one's advantage to achieve a desired feature size if one has control over the taper angle.

Paper Details

Date Published: 27 March 1997
PDF: 12 pages
Proc. SPIE 2993, Lasers as Tools for Manufacturing II, (27 March 1997);
Show Author Affiliations
James Angell, Resonetics, Inc. (United States)
Wen Ho, Resonetics, Inc. (United States)
Ronald D. Schaeffer, Resonetics, Inc. (United States)

Published in SPIE Proceedings Vol. 2993:
Lasers as Tools for Manufacturing II
Leonard R. Migliore; Ronald D. Schaeffer, Editor(s)

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