Off-axis vortex beam propagation through classical optical system in terms of Kummer confluent hypergeometric function
| Autor: | Łukasz Płociniczak, Ireneusz Augustyniak, Agnieszka Popiołek-Masajada, Weronika Lamperska, Jan Masajada |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
singular optics
lcsh:Applied optics. Photonics Phase (waves) FOS: Physical sciences Physics::Optics hypergeometric function 02 engineering and technology angular momentum 01 natural sciences 010309 optics 020210 optoelectronics & photonics Kummer function 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Radiology Nuclear Medicine and imaging Instrumentation Topological quantum number optical microscopy Physics Confluent hypergeometric function Paraxial approximation lcsh:TA1501-1820 Atomic and Molecular Physics and Optics Vortex Classical mechanics optical vortex Optical vortex Beam (structure) Optics (physics.optics) Gaussian beam Physics - Optics |
| Zdroj: | Photonics, Vol 7, Iss 60, p 60 (2020) Photonics Volume 7 Issue 3 |
| Popis: | The analytical solution for the propagation of the laser beam with optical vortex through the system of lenses is presented. The optical vortex is introduced into the laser beam (described as Gaussian beam) by spiral phase plate. The solution is general as it holds for the optical vortex of any integer topological charge, the off-axis position of the spiral phase plate and any number of lenses. Some intriguing conclusions are discussed. The higher order vortices are unstable and split under small phase or amplitude disturbance. Nevertheless, we have shown that off-axis higher order vortices are stable during the propagation through the set of lenses described in paraxial approximation, which is untypical behavior. The vortex trajectory registered at image plane due to spiral phase plate shift behaves like a rigid body. We have introduced a new factor which in our beam plays the same role as Gouy phase in pure Gaussian beam. 28 pages, 8 figures |
| Databáze: | OpenAIRE |
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