Generation of optical vortices by converting elegant hermite gaussian beams

Megumi Okamoto, Hiroyuki Sasada

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We have derived that an optical vortex of charge l can be generated in an arbitrary position over the transverse cross section of the light beam by converting a tailored elegant Hermite Gaussian beam of order l [J. Opt. Soc. Am. 63 (1973) 1093] using an astigmatic mode converter. We have indeed generated a quasi-elegant Hemite Gaussian beam of order 1 by superposing two Gaussian beams copropagating with a spatial separation, and converted it into a vortex beam. The vortex moves by varying the relative amplitude and phase of the Gaussian beams, which agrees well with the theoretical predictions.

Original languageEnglish
Pages (from-to)1743-1747
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume44
Issue number4 A
DOIs
Publication statusPublished - 2005 Apr 1

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Keywords

  • Astigmatic mode converter
  • Hermite gaussian beam
  • Laguerre gaussian beam
  • Mach-zehnder interferometer
  • Optical vortex

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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