Abstract
The work contains study of the influence of amplitude and phase distortions on the generation of two-lobe light fields with the intensity distribution rotating under propagation. Spiral beams, as well as light fields formed on their basis, are considered as particular examples of two-lobe light fields. The amplitude distortions result from the preset different intensity distributions of the illuminating beam, and phase distortions are determined by the primary aberrations.
Highlights
In real optical systems both amplitude and phase distortions occur
The light fields with a rotating intensity distribution under propagation are the matter of interest in solving various applied problem
A compromise is often made in practice and light fields preserving the spatial structure of their intensity distribution within a limited area, are used instead of the spiral beams
Summary
In real optical systems both amplitude and phase distortions occur. For example, in problems of three-dimensional high resolution of the fluorescent microscopy, the intensity distribution of the beam illuminating the phase mask depends on the used micro objective and the ratio of the apertures of the mask and illuminating beam. The light fields with a rotating intensity distribution under propagation are the matter of interest in solving various applied problem. One of the bright examples of such problems is the use of two-lobe light fields (i.e. the field with two sharp intensity peaks) [1] for improvement of the longitudinal resolution of fluorescent optical microscopes. The ability of the intensity rotation during propagation is characteristic for spiral light beams [2].
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