Spin to orbital angular momentum transfer in frequency up-conversion

Braian Pinheiro Da Silva, Wagner T. Buono, Leonardo J. Pereira, Daniel S. Tasca, Kaled Dechoum, Antonio Z. Khoury (Lead / Corresponding author)

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)
26 Downloads (Pure)


We demonstrate the spin to orbital angular momentum transfer in frequency upconversion with structured light beams. A vector vortex is coupled to a circularly polarized Gaussian beam in noncollinear second harmonic generation under type-II phase match. The second harmonic beam inherits the Hermite–Gaussian components of the vector vortex; however, the relative phase between them is determined by the polarization state of the Gaussian beam. This effect creates an interesting crosstalk between spin and orbital degrees of freedom, allowing the angular momentum transfer between them. Our experimental results match the theoretical predictions for the nonlinear optical response.
Original languageEnglish
Pages (from-to)771-778
Number of pages8
Issue number4
Early online date8 Nov 2021
Publication statusPublished - 4 Jan 2022


  • Nonlinear optics
  • OAM
  • second harmonic generation
  • structured light

ASJC Scopus subject areas

  • Biotechnology
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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