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Proceedings Paper

Beam shaping system based on polymer spherical gradient refractive index lenses
Author(s): Ramzi N. Zahreddine; Richard S. Lepkowicz; Robert M. Bunch; Eric Baer; Anne Hiltner
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Paper Abstract

A two-element laser beam shaping system based on spherical gradient refractive index (GRIN) lenses has been designed utilizing the optical design package CODE V®. The impetus for this design is the recent development of large diameter (~ 20 mm) layered polymer spherical GRIN lenses that can be fabricated with arbitrary index of refraction profiles between 1.490 and 1.573. A merit function is developed that includes the index range constraint, radius of curvature and thickness fabrication constraints, and a mapping function which maps the Gaussian irradiance profile into a flat-top profile. The designed system features high transmission efficiency, with nearly 100% of the energy transferred to the output beam and a variance of less than 3% in uniformity from the center to the edge of the beam. The adaptability of the lens making process allows for an additional degree of freedom in beam shaping.

Paper Details

Date Published: 18 September 2008
PDF: 8 pages
Proc. SPIE 7062, Laser Beam Shaping IX, 706214 (18 September 2008); doi: 10.1117/12.795001
Show Author Affiliations
Ramzi N. Zahreddine, Rose-Hulman Institute of Technology (United States)
Richard S. Lepkowicz, Rose-Hulman Institute of Technology (United States)
Robert M. Bunch, Rose-Hulman Institute of Technology (United States)
Eric Baer, Case Western Reserve Univ. (United States)
Anne Hiltner, Case Western Reserve Univ. (United States)


Published in SPIE Proceedings Vol. 7062:
Laser Beam Shaping IX
Andrew Forbes; Todd E. Lizotte, Editor(s)

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