Efficient conversion of a gaussian beam to a high purity helical beam

Galina Machavariani, Nir Davidson, Erez Hasman, Shmuel Blit, Amiel A. Ishaaya, Asher A. Friesem

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

A method for efficiently converting a Gaussian beam into a helical Laguerre-Gaussian (LG) beam is presented. It is based on using a pair of axicons to produce a shifted-Gaussian (doughnut) intensity distribution that is then passed through a spiral phase element. It is shown that the conversion efficiency can be as high as

Original languageEnglish
Pages (from-to)265-271
Number of pages7
JournalOptics Communications
Volume209
Issue number4-6
DOIs
StatePublished - 15 Aug 2002
Externally publishedYes

Keywords

  • Beam conversion
  • Helical beams
  • Laser beams
  • Phase elements

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