Advanced Photonics, Volume. , Issue , ()

Simultaneous creation of multiple vortex-antivortex pairs in momentum space in photonic lattices [Early Posting]

Li Feng, Koniakhin Sergei, Nalitov Anton, Cherotchenko E., Solnyshkov Dmitry, Malpuech Guillaume, Xiao Min, Zhang Yanpeng, Zhang Zhaoyang
Author Affiliations
  • Xi''''an Jiaotong University
  • Institute for Basic Science
  • ITMO University
  • Ioffe Institute
  • Institut Pascal
  • Nanjing University
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    Engineering of the orbital angular momentum (OAM) of light due to interaction with photonic lattices reveals rich physics and motivates potential applications. We report the experimental creation of regularly-distributed quantized vortex arrays in momentum space by probing the honeycomb and hexagonal photonic lattices with a single focused Gaussian beam. For the honeycomb lattice, the vortices are associated with Dirac points. However, we show that the resulting spatial patterns of vortices are strongly defined by the symmetry of the wave packet evolving in the optical lattice, and not by lattice topological properties. Our findings reveal the underlying physics by connecting the symmetry and OAM conversion, and provide a simple and efficient method to create regularly-distributed multiple vortices from unstructured light.

    Paper Information

    Manuscript Accepted: Sep. 4, 2023

    Posted: Nov. 20, 2023

    DOI: AP