High-efficiency flat-top beam shaper fabricated by a nonlithographic technique

Xu Guang Huang, Michael R. Wang, Changyuan Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)


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%.
Original languageEnglish
Pages (from-to)208-213
Number of pages6
JournalOptical Engineering
Issue number2
Publication statusPublished - 1 Jan 1999
Externally publishedYes


  • Beam shaping
  • Diffractive optical element
  • Flat-top beam

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Engineering


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