Near-Index-Match refractive beam shapers

Steven M. Ebstein

doi:10.1117/12.446738

30 October 2001 Near-Index-Match refractive beam shapers

Steven M. Ebstein

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-Match^TM 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.

Citation Download Citation

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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