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Proceedings Paper

Magnetorheological finishing for imprinting continuous-phase plate structures onto optical surfaces
Author(s): Joseph A. Menapace; Sham N. Dixit; Francois Y. Genin; Wayne F. Brocious
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Paper Abstract

Magnetorheological finishing (MRF) techniques have been developed to manufacture continuous phase plates (CPPs) and custom phase corrective structures on polished fused silica surfaces. These phase structures are important for laser applications requiring precise manipulation and control of beam-shape, energy distribution, and wavefront profile. The MRF’s unique deterministic-sub-aperture polishing characteristics make it possible to imprint complex topographical information onto optical surfaces at spatial scale-lengths approaching 1 mm. In this study, we present the results of experiments and model calculations that explore imprinting two-dimensional sinusoidal structures. Results show how the MRF removal function impacts and limits imprint fidelity and what must be done to arrive at a high quality surface. We also present several examples of this imprinting technology for fabrication of phase correction plates and CPPs for use at high fluences.

Paper Details

Date Published: 10 June 2004
PDF: 11 pages
Proc. SPIE 5273, Laser-Induced Damage in Optical Materials: 2003, (10 June 2004); doi: 10.1117/12.527822
Show Author Affiliations
Joseph A. Menapace, Lawrence Livermore National Lab. (United States)
Sham N. Dixit, Lawrence Livermore National Lab. (United States)
Francois Y. Genin, Lawrence Livermore National Lab. (United States)
Wayne F. Brocious, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 5273:
Laser-Induced Damage in Optical Materials: 2003
Gregory J. Exarhos; Arthur H. Guenther; Norbert Kaiser; Keith L. Lewis; M. J. Soileau; Christopher J. Stolz, Editor(s)

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