Homothetic apodization of circular aperture HACA: simulation results

O. Azagrouze; A. Habib; Y. Elazhari; Z. Benkhaldoun; M. Lazrek

doi:10.1117/12.856383

21 July 2010 Homothetic apodization of circular aperture HACA: simulation results

O. Azagrouze, A. Habib, Y. Elazhari, Z. Benkhaldoun, M. Lazrek

Proceedings Volume 7734, Optical and Infrared Interferometry II; 77343I (2010) https://doi.org/10.1117/12.856383
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

In this paper we describe a new technique of circular aperture apodization. It is produced by interferometry. The light, which is diffracted by a circular aperture, is split into two beams of different amplitudes where one of them has undergone an homothety to change its radial dimensions, by using an afocal optical system. The two beams are then combined coherently to form an apodized point spread function (PSF). This procedure allows us to reduce the diffraction wings of the PSF with different reduction factors depending on the combination parameters.

Citation Download Citation

O. Azagrouze, A. Habib, Y. Elazhari, Z. Benkhaldoun, and M. Lazrek "Homothetic apodization of circular aperture HACA: simulation results", Proc. SPIE 7734, Optical and Infrared Interferometry II, 77343I (21 July 2010); https://doi.org/10.1117/12.856383

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