Generation of photonic orbital angular momentum superposition states using vortex beam emitters with superimposed gratings

Qingsheng Xiao, Charalambos Klitis, Shimao Li, Yueyang Chen, Xinlun Cai, Marc Sorel, Siyuan Yu

Research output: Contribution to journalArticle (Academic Journal)peer-review

27 Citations (Scopus)
466 Downloads (Pure)

Abstract

An integrated approach to produce photonic orbital angular momentum (OAM) superposition states with arbitrary OAM spectrum has been demonstrated. Superposition states between two vector OAM modes have been achieved by integrating a superimposed angular grating in one silicon micro-ring resonator, with each mode having near equal weight. The topological charge difference between the two compositional OAM modes is determined by the difference between the numbers of elements in the two original gratings being superimposed, while the absolute values of the topological charge can be changed synchronously by switching WGM resonant wavelengths. This novel approach provides a scalable and flexible source for the OAM-based quantum information and optical manipulation applications.
Original languageEnglish
Pages (from-to)3168-3176
Number of pages9
JournalOptics Express
Volume24
Issue number4
Early online date8 Feb 2016
DOIs
Publication statusPublished - 22 Feb 2016

Keywords

  • optical vortices
  • gratings
  • integrated optics devices

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