Abstract
Vortices, phase singularities, and topological defects of any kind often reflect information that is crucial for understanding physical systems in which such entities arise. With near-field experiments supported by numerical calculations, we determine the fluctuations of the topological charge for phase singularities in isotropic random waves as a function of the size 푅 of the observation window. We demonstrate that for two-dimensional fields such fluctuations increase with a superlinear scaling law, consistent with a 푅 log 푅 behavior. Additionally, we show that such scaling remains valid in the presence of anisotropy.
Original language | English |
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Pages (from-to) | 2740-2743 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 43 |
Issue number | 12 |
DOIs | |
Publication status | Published - 4 Jun 2018 |
Keywords
- Screening
- topological defects
- singular optics
- singularities
- random waves
- chaos
- wave optics
- near-field measurement
- nanoscale optics
- superdiffusive