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Updated: May 12, 2026

Preparation of Free-Surface Hyperbolic Water Vortices
Published on: July 28, 2023
Twin axial vortices generated by Fibonacci lenses
Arnau Calatayud1, Vicente Ferrando, Laura Remón
1Centro de Tecnologías Físicas, Universitat Politècnica de València, 46022 Valencia, Spain.
Abstract:
Optical vortex beams, generated by Diffractive Optical Elements (DOEs), are capable of creating optical traps and other multi-functional micromanipulators for very specific tasks in the microscopic scale. Using the Fibonacci sequence, we have discovered a new family of DOEs that inherently behave as bifocal vortex lenses, and where the ratio of the two focal distances approaches the golden mean. The disctintive optical properties of these Fibonacci vortex lenses are experimentally demonstrated. We believe that the versatility and potential scalability of these lenses may allow for new applications in micro and nanophotonics.
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