Share Email Print
cover

Optical Engineering

Rapid prototyping of diffractive optical elements for high-power lasers using laser ablation lithography fabrication and coherence probe microscopy analysis
Author(s): Manuel Flury; A. Benatmane; Philippe Gerard; Paul C. Montgomery; Joel Fontaine; Thierry Engel; J.P. Schunck
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

An alternative technique for rapid prototyping of diffractive optical elements (DOEs) for use with mid-infrared high-power lasers is proposed. The solution is based on the photoablation of an intermediate resist layer on various substrates using an excimer laser in a micromachining station, followed by classical etching of the substrate to form the DOE. Being able to achieve rapid prototyping also depends on having available a rapid, precise, nondestructive profilometry technique in order to optimize each stage of the manufacturing process. After comparing several techniques for structural characterization, we found that coherence probe microscopy was the best one suited for the rapid and precise measurement of the squareness, depth, and surface roughness of the transparent resist mask and the substrate features. Several results of the characterization of transparent resist layers and etched substrates are given. The technique of rapid prototyping by the means proposed is illustrated with the fabrication of a DOE for direct marking of an industrial logo using a high-power CO2 laser.

Paper Details

Date Published: 1 October 2002
PDF: 12 pages
Opt. Eng. 41(10) doi: 10.1117/1.1501569
Published in: Optical Engineering Volume 41, Issue 10
Show Author Affiliations
Manuel Flury, Ecole Nationale Superieure de Physique de Strasbourg (France)
A. Benatmane, CNRS (France)
Philippe Gerard, Ecole Nationale Superieure de Physique de Strasbourg (France)
Paul C. Montgomery, CNRS (France)
Joel Fontaine, Ecole Nationale Superieure de Physique de Strasbourg (France)
Thierry Engel, Ecole Nationale Superieure de Physique de Strasbourg (France)
J.P. Schunck, Lab. PHASE/CNRS (France)


© SPIE. Terms of Use
Back to Top