Point Spread Functions of aberrated Leaky annular apertures with defocus

Author:

Sabitha N.1,Rani S. Vidya2,Venkanna M.3,Sagar D. Karuna1

Affiliation:

1. Osmania University, Hyderabad

2. Sri Venkateshwara Govt. Arts And Science College, Palem

3. BVRIT HYDERABAD College of Engineering for Women

Abstract

Abstract The point spread function of the optical system in the presence of defocus and primary spherical aberration with the complex Hanning filter with amplitude and phase has been investigated. A substantial improvement in the intensity profile of the impulse response of the optical system has been achieved. When the optical system is subjected to higher orders of aberration and apodization, the optical system behaves like a super-resolver with lateral resolution of the central peak being improved radically. The presence of first minima with zero intensity suits the optical system to be applied for two-point resolution studies in terms of Rayleigh criterion.

Publisher

Research Square Platform LLC

Reference33 articles.

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2. 2. Wetherell, w.b. “applied optics and optical engineering” (Academic press, N.Y., Eds. R. R. Shannon & J.C. Wyant) vol.8, ch.6, p.173–283, (1980).

3. 3. Papoulis, A., “Maximum Intensity of Diffraction Patterns and Apodization”, J. Opt. Soc. Am., 57, p.362,(1967). DOI:10.1364/JOSA.57.000362

4. 4. Papoulis, A., “Systems and Transforms with Applications in Optics”, (McGraw-Hill, USA) p.442, (1968).

5. 5. K. P. Rao, P. K. Mondal, and T. Seshagiri Rao, “Coherent imagery of straight edges with Straubel apodisation filters,” Optik, 50, p 73–81 (1978).

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