| Issue |
J. Eur. Opt. Society-Rapid Publ.
Volume 22, Number 1, 2026
Recent Advances on Optics and Photonics 2026
|
|
|---|---|---|
| Article Number | 8 | |
| Number of page(s) | 7 | |
| DOI | https://doi.org/10.1051/jeos/2026003 | |
| Published online | 17 February 2026 | |
Research Article
Influence of modulation parameters on the self-focusing characteristics of rectangular Airy vortex beam
1
School of Optoelectronic and Communication Engineering, Xiamen University of Technology, Xiamen 361024, PR China
2
Fujian Key Laboratory of Optoelectronic Technology and Devices, Xiamen University of Technology, Xiamen 361024, PR China
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
14
November
2025
Accepted:
12
January
2026
Abstract
This study investigates the self-focusing characteristics of a rectangular Airy vortex beam (RAVB) via phase modulation. Numerical simulations are conducted to examine the influence of modulation parameters, including linear factor (c), topological charge (l) and wavelength (λ) on RAVB self-focusing characteristics. The focus depth, focus spot size and peak intensity of RAVB can be effectively controlled via the modulation parameters. Among these parameters, c has the most significant impact on RAVB self-focusing characteristics. As c increases from 4 to 8, the focus depth changes from 8 cm to 41 cm, while the peak intensity increases to 50 times. Although variations in l and λ also contribute to increases in both focus depth and peak intensity, their effects are relatively minor compared to those of c.
Key words: Self-focusing / Rectangular Airy vortex beam / Topological charge / Focus depth
© The Author(s), published by EDP Sciences, 2026
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