Investigation of computer-generated diffractive beam shapers for flattening of single-modal CO2 laser beams

M. Duparré, M. A. Golub, B. Lüdge, V. S. Pavelyev, V. A. Soifer, G. V. Uspleniev, S. G. Volotovskii

Research output: Contribution to journalArticlepeer-review

Abstract

A full cycle was realized of the photolithographic development and detailed testing of a diffractive optical element that transforms the diverging Gaussian beams of CO2 lasers into a uniformly filled-in rectangle. The zone feature size of the beam shaper, the diffractive efficiency and accuracy, the focus depth, and the stability with respect to the size and the divergence of incident Gaussian beams are studied by computer modeling. Calculated flattop intensity distributions are presented in the same form of gray-level pictures and three-dimensional plots as the corresponding results measured by an IR camera.

Original languageEnglish
Pages (from-to)2489-2497
Number of pages9
JournalApplied Optics
Volume34
Issue number14
DOIs
StatePublished - 10 May 1995
Externally publishedYes

Keywords

  • Beam shapers
  • Binary optics
  • Computer-generated holograms
  • Diffraction efficiency
  • Diffractive optics
  • Measurement of intensity patterns

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