Analysis and optimization on single-zone binary flat-top beam shaper

Jame J. Yang, Michael R. Wang

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)3106-3113
Number of pages8
JournalOptical Engineering
Issue number11
StatePublished - Nov 2003


  • Beam shaping
  • Binary phase element
  • Diffractive optics
  • Flat top

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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