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Updated: Jan 29, 2026

Trapping of Micro Particles in Nanoplasmonic Optical Lattice
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Controllable beam reshaping by mixing square-shaped and hexagonal optical vortex lattices.

L Stoyanov1, G Maleshkov1, M Zhekova1

  • 1Department of Quantum Electronics, Faculty of Physics, Sofia University, 5, J. Bourchier Blvd., Sofia, 1164, Bulgaria.

Scientific Reports
|February 16, 2019
PubMed
Summary
This summary is machine-generated.

Researchers reshaped optical vortex (OV) lattices by mixing square and hexagonal patterns. Varying lattice spacing controls the resulting focused beam structures, enabling tailored optical properties.

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Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Beam Shaping

Background:

  • Optical vortex (OV) lattices offer complex light field control.
  • Mixing different lattice geometries can lead to novel beam structures.
  • Understanding the interplay of lattice parameters is crucial for advanced optical applications.

Purpose of the Study:

  • To experimentally and numerically demonstrate far-field beam reshaping using mixed square and hexagonal optical vortex lattices.
  • To investigate the influence of lattice node spacing on the resulting focal patterns.
  • To explore the possibility of hosting different types of singular beams within the generated bright beams.

Main Methods:

  • Experimental generation and observation of mixed optical vortex lattices.
  • Numerical simulations to model the beam propagation and reshaping.
  • Analysis of focal patterns at varying square-to-hexagonal vortex array node spacings.

Main Results:

  • Substantial far-field beam reshaping was achieved by mixing square and hexagonal OV lattices with alternating topological charges.
  • The small-scale structure of the focal pattern is determined by the lattice with larger node spacing, while the large-scale structure is determined by the lattice with smaller node spacing.
  • Individual bright beams within the focal patterns can host optical vortices, one-dimensional, or quasi-two-dimensional singular beams.
  • The square-to-hexagonal vortex array node spacing was identified as a controllable parameter for generating desired focused structures.

Conclusions:

  • Mixing square and hexagonal optical vortex lattices provides a versatile method for beam reshaping.
  • The node spacing ratio between the two lattice types acts as a critical control parameter for tailoring focal patterns.
  • This technique allows for the generation of complex optical fields with potential applications in optical manipulation and information processing.