Vol. 48, Issue 4, pp. 549-561

Vol. 48 Issue 4 pp. 549-561

Two-point resolution with spherical aberration quadratic amplitude filters

Naresh Kumar Reddy Andra, Svetlana Nikolaevna Khonina

Keywords

coherence, apodization, superresolution

Abstract

The study deals with the effects of spherical aberration on the Airy distribution of two overlapping point images of equal- or unequal-intensities separated by the distances less than the Rayleigh angular limit of resolution investigated. Aberration considered in this work is the primary spherical aberration. By employing the quadratic amplitude apodization across the aperture, the high resolution is achieved in the form of resolving the two-point images, which is higher than that of the unapodized ones. In this investigation, the apodization mask applied to the aperture and the corresponding intensity distributions of two-point images have been studied numerically.

Vol. 48
Issue 4
Article No: 02
pp. 549-561

0.44 MB
OPTICA APPLICATA - a quarterly of the Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology