Metasurface for engineering superimposed Ince-Gaussian beams

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Abstract

Ince‐Gaussian beams (IGBs) are the third complete family of exact and orthogonal solutions of the paraxial wave equation and have been applied in many fields ranging from particle trapping to quantum optics. IGBs play a very important role in optics as they represent the exact and continuous transition modes connecting Laguerre–Gaussian and Hermite–Gaussian beams. The method currently in use suffers from the high cost, complexity, and large volume of the optical system. The superposition of IGBs can generate complicated structured beams with multiple phase and polarization singularities. A metasurface approach is proposed to realizing various superpositions of IGBs without relying on a complicated optical setup. By superimposing IGBs with even and odd modes, multiple phase, and polarization singularities are observed in the resultant beams. The phase and polarization singularities are modulated by setting the initial phase in the design and controlling the incident linear polarization. The compactness of the developed metasurface devices and the unique properties of the generated beams have the potential to impact many practical applications such as particle manipulation, orbital angular momentum spectrum manipulation, and optical communications.
Original languageEnglish
Article number2312853
JournalAdvanced Materials
Early online date14 Feb 2024
DOIs
Publication statusE-pub ahead of print - 14 Feb 2024

Keywords

  • optical metasurface
  • Ince gaussian beam
  • superimposed Ince gaussian beam
  • phase singularity
  • polarization singularity

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