Related Experiment Video
Updated: Jun 1, 2026

Scanning SQUID Study of Vortex Manipulation by Local Contact
Published on: February 1, 2017
Systematic approach to complex periodic vortex and helix lattices.
Julian Becker1, Patrick Rose, Martin Boguslawski
1Institut für Angewandte Physik and Center for Nonlinear Science (CeNoS), Westfälische Wilhelms-Universität Münster, Correnstr. 2/4, 48149 Münster, Germany. julian.becker@uni-muenster.de
We developed a framework to describe complex light field symmetries, enabling the creation of periodic structures with phase dislocations. This research details three fundamental 2D vortex lattices and their 3D extensions for applications in holographic lithography.
Area of Science:
- Optics and Photonics
- Mathematical Physics
Background:
- Complex light fields exhibit symmetries crucial for structured light generation.
- Phase dislocations, or optical vortices, are key features in light field manipulation.
- Understanding and controlling periodic structures in light fields is essential for advanced optical applications.
Purpose of the Study:
- To present a general framework for describing symmetries of complex light fields.
- To demonstrate the construction of sophisticated periodic structures with phase dislocations.
- To explore applications in holographic lithography through 3D lattice generation.
Main Methods:
- Development of a comprehensive framework for symmetry description.
- Derivation of three fundamental two-dimensional vortex lattices (triangular, quadratic, hexagonal).
- Numerical calculations and experimental realization of complex intensity and phase distributions.
Main Results:
- Successful derivation of triangular, quadratic, and hexagonal vortex lattices.
- Demonstration of these lattices forming the basis for complex 3D lattices.
- Observation of helical intensity distributions in the 3D lattices.
Conclusions:
- The presented framework systematically describes light field symmetries.
- The derived 2D and 3D vortex lattices offer a foundation for advanced optical structuring.
- The findings suggest valuable applications in holographic lithography and structured light generation.
Related Concept Videos
Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
Crystal Field Theory - Tetrahedral and Square Planar Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Structures of Solids
Gauss's Law: Planar Symmetry
Bewley Lattice Diagram
Lattice Centering and Coordination Number
Types of Unit Cells
Imagine taking a large number of identical...

