Open AccessSimulation of the action of a three-dimensional nonlinear spiral phase plate in the near diffraction zone
Author(s) -
Pavel A. Khorin,
Andrey V. Ustinov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1695/1/012165
Subject(s) - diffraction , nonlinear system , optics , action (physics) , phase difference , polarization (electrochemistry) , phase (matter) , physics , basis (linear algebra) , finite element method , geometry , mathematics , quantum mechanics , chemistry , thermodynamics
The report investigates the action of a nonlinear spiral phase plate in the near diffraction zone, taking into account the three-dimensional structure of the optical element. Simulation of the diffraction of a Gaussian beam with linear polarization is performed on the basis of the finite difference in the time domain method. Numerical comparison of the action of linear and nonlinear phase plates showed a difference in their action at distancing from the optical element.