Characterizing the topological charges distribution of the elliptical beams with vortex lattices

Y. H. Hsieh, Y. H. Lai, M. X. Hsieh, Yung-Fu Chen*

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

A new numerical approach is proposed to analyze the topological charges distribution of elliptical beams with vortex lattices generated from the astigmatic transformations of Hermite-Gaussian beams. The birth and death of the topological charges for elliptical beams are thoroughly verified by continuously changing the astigmatic strength. The theoretical explorations are exploited to make a complete comparison with experimental measurements which are obtained from an off-axis pumped solid-state laser with an external astigmatic mode converter and a Mach-Zehnder interferometer. The good agreement between the theoretical and experimental results provides the feasibility to flexibly manipulate the topological charges of vortex lattices in further applications. (C) 2019 Optical Society of America

Original languageEnglish
Pages (from-to)200-203
Number of pages4
JournalOptics Letters
Volume45
Issue number1
DOIs
StatePublished - 1 Jan 2020

Keywords

  • LAGUERRE-GAUSSIAN BEAMS
  • OPTICAL VORTICES
  • GENERATION
  • LIGHT
  • MODES

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