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30 October 2001 Near-Index-Match refractive beam shapers
Steven M. Ebstein
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Proceedings Volume 4443, Laser Beam Shaping II; (2001) https://doi.org/10.1117/12.446738
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States
Abstract
A method for designing and fabricating aspherical transmissive beam shaping elements for the visible and near-IR is described. Both rotationally symmetric and non-symmetric aspheres can be fabricated as Near-Index-MatchTM optics. The aspherical surface is machined or mastered using a conventional NC machine. A sandwich of two transmissive materials is formed, with the refractive phase the product of the surface relief and the index difference. Both far-field (Dickey, Romero, and Holswade) beam shapers and near-field (Rhodes and Shealy) beam shapers can be realized, as well as two-element systems with phase correction of the shaped beam. Design methodologies and results are presented.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Steven M. Ebstein "Near-Index-Match refractive beam shapers", Proc. SPIE 4443, Laser Beam Shaping II, (30 October 2001); https://doi.org/10.1117/12.446738
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KEYWORDS
Beam shaping
Near field optics
Diffraction
Surface finishing
Optical design
Ray tracing
Aspheric lenses
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