Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7929853 | Optics Communications | 2015 | 8 Pages |
Abstract
We study radially symmetric diffractive optical elements to generate an array of local foci or intensity zeros in the paraxial region by a certain law. The axial distribution is defined by the spatial spectrum of the optical element's radial function, enabling the elements to be called longitudinal-spectrum lenses. The theoretical explanation of the effect is based on the reduction of the Fresnel-Hankel transform to the one-dimensional Fourier transform. The various lenses are analyzed include those generating longitudinal distribution proportional to the Airy and Hermite-Gaussian functions.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
S.N. Khonina, A.V. Ustinov,