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Optical Engineering

High-efficiency flat-top beam shaper fabricated by a nonlithographic technique
Author(s): Xu Guang Huang; Michael R. Wang; Changyuan Yu
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Paper Abstract

We report a compact flat-top beam shaper fabricated by laser-assisted chemical etching upon an ion-exchanged high-energy- beam-sensitive glass. The beam shaper combines a phase filter element and a focusing lens element into a single diffractive optical element with a quasi-continuous surface relief profile. The fabrication takes advantage of the laser generation of gray-level patterns and one-step etching that are effective especially for such beam shaper fabrication. The demonstrated beam shaper with good flatness and edge features has an energy efficiency of 82%.

Paper Details

Date Published: 1 February 1999
PDF: 6 pages
Opt. Eng. 38(2) doi: 10.1117/1.602255
Published in: Optical Engineering Volume 38, Issue 2
Show Author Affiliations
Xu Guang Huang, Univ. of Miami (United States)
Michael R. Wang, Physical Optics Corp. (United States)
Changyuan Yu, Univ. of Miami (United States)

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