title: Twin axial vortices generated by Fibonacci lenses.
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.
authors.affiliation: Centro de Tecnologías Físicas, Universitat Politècnica de València, 46022 Valencia, Spain.
authors.forename: Arnau
authors.initials: A
authors.lastname: Calatayud
authors.forename: Vicente
authors.initials: V
authors.lastname: Ferrando
authors.forename: Laura
authors.initials: L
authors.lastname: Remón
authors.forename: Walter D
authors.initials: WD
authors.lastname: Furlan
authors.forename: Juan A
authors.initials: JA
authors.lastname: Monsoriu
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008027:Light; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation