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Optical Engineering

Analysis and optimization on single-zone binary flat-top beam shaper
Author(s): Jame J. Yang; Michael R. Wang
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Paper Abstract

We report on the analysis and optimization of a binary phase element for shaping a Gaussian laser beam to a flat-top beam. Simulation results indicate that a single-zone binary phase plate can achieve excellent flat-top beam shaping quality similar to that achieved by using multiple zones. The degradation of flat-top beam shaping quality due to etching depth errors, deviation of illuminating wavelength from design value, and variation of input beam size can be compensated to some extent through on-axis adjustment of the flat-top beam observation plane. Experiments verify these theoretical expectations. The increased beam shaper fabrication tolerance can be greatly beneficial for low-cost prototyping and production of flat-top beam shapers.

Paper Details

Date Published: 1 November 2003
PDF: 8 pages
Opt. Eng. 42(11) doi: 10.1117/1.1617310
Published in: Optical Engineering Volume 42, Issue 11
Show Author Affiliations
Jame J. Yang, New Span Opto-Technology Incorporated (United States)
Michael R. Wang, Univ. of Miami (United States)

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