1 November 2003 Analysis and optimization on single-zone binary flat-top beam shaper
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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.
Jame J. Yang, Michael R. Wang, "Analysis and optimization on single-zone binary flat-top beam shaper," Optical Engineering 42(11), (1 November 2003). https://doi.org/10.1117/1.1617310
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