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PreprintCC BY 4.0arXiv

Propagation invariant one-dimensional flat-top vector beam with conserved topology

  • Cathy Maako
  • Yuancong Cao
  • Pedro Ornelas
  • Mingjian Cheng
  • Andrew Forbes
  • Angela Dudley
  • Isaac Nape
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Abstract

We report the generation and control of a propagation invariant one-dimensional flat-top vector beam through the digitally controlled superposition of a first-order petal- and Gaussian- mode each marked with orthogonal polarizations. We present a detailed analysis of the spatial and polarization profiles and unveil their intricate topological features, showing that they have properties that are invariant to the propagation dynamics, in addition to their preserved intensity. The differential Gouy phase between the spatial components is shown to rotate the great circle traced by the polarisation distribution on the Poincaré sphere. Finally, we assess the beams for laser cutting and optical trapping, highlighting the relevance of topological structured light to these applications.

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Cite

BibTeXRIS
BibTeX
@misc{maako2026propagation,
  title = {{Propagation invariant one-dimensional flat-top vector beam with conserved topology}},
  author = {Cathy Maako and Yuancong Cao and Pedro Ornelas and Mingjian Cheng and Andrew Forbes and Angela Dudley and Isaac Nape},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.01883},
  eprint = {2611.01883},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.01883},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Propagation invariant one-dimensional flat-top vector beam with conserved topology
AU  - Cathy Maako
AU  - Yuancong Cao
AU  - Pedro Ornelas
AU  - Mingjian Cheng
AU  - Andrew Forbes
AU  - Angela Dudley
AU  - Isaac Nape
PY  - 2026
DA  - 2026/11/01
PB  - arXiv
DO  - 10.48550/arxiv.2611.01883
UR  - https://arxiv.org/abs/2611.01883
AB  - We report the generation and control of a propagation invariant one-dimensional flat-top vector beam through the digitally controlled superposition of a first-order petal- and Gaussian- mode each marked with orthogonal polarizations. We present a detailed analysis of the spatial and polarization profiles and unveil their intricate topological features, showing that they have properties that are invariant to the propagation dynamics, in addition to their preserved intensity. The differential Gouy phase between the spatial components is shown to rotate the great circle traced by the polarisation distribution on the Poincaré sphere. Finally, we assess the beams for laser cutting and optical trapping, highlighting the relevance of topological structured light to these applications.
ER  -