• Effects of aberrations on the point spread function and the two-point resolution with versatile apodization pupils

• Fulltext

https://www.ias.ac.in/article/fulltext/pram/094/0145

• Keywords

Apodization; point spread function; defocussing; spherical aberration; full-width at half-maximum; two-point resolution.

• Abstract

In this work, efficient amplitude-apodization pupils have been presented for tailoring the point spread function (PSF), which results in a decreased full-width at half-maximum (FWHM) and suppressed sidelobes. Comparison of PSF intensity profiles for both the unapodized and apodized cases have been reported. By analysing the resulting PSFs, the well-known effects induced by monochromatic aberrations such as defocussing effect, and the primary spherical aberration have been controlled for various degrees of apodization parameter $\beta$. It is shown that the two-point resolution of the apodized optical system significantly increased in the presence of aberrations. The proposed pupil apodizer is very effective in enhancing the resolution of the optical systems applicable in imaging and focussing applications.

• Author Affiliations

1. Samara National Research University, Moskovskoye Shosse, 34, Samara, Russia 443086
2. Department of Physics, College of Science, Fasa University, Fasa 74617-81189, Iran
3. Department of Physics, University College of Science, Osmania University, Hyderabad 500 007, India

• Pramana – Journal of Physics

Volume 94, 2020
All articles
Continuous Article Publishing mode

• Editorial Note on Continuous Article Publication

Posted on July 25, 2019

Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.