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      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

       

      ANDRA NARESH KUMAR REDDY1 MAHDIEH HASHEMI2 DASARI KARUNA SAGAR3

      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
    • Dates

       
  • Pramana – Journal of Physics | News

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