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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 27, Iss. 24 — Dec. 15, 1988
  • pp: 5140–5145

Apodization of annular apertures: Strehl ratio

Jorge Ojeda-Castaneda, Eduardo Tepichin, and Amparo Pons  »View Author Affiliations


Applied Optics, Vol. 27, Issue 24, pp. 5140-5145 (1988)
http://dx.doi.org/10.1364/AO.27.005140


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Abstract

We show that for any rotationally symmetric apodizer on the full aperture, there is a family of apodizers on the annular aperture with the same functional Strehl ratio vs defocus (W20) and vs spherical aberration (W40). However, in the latter case, the coefficients W20 and W40 are reduced by the factors (1 − ɛ2) and (1 − ɛ2)2, respectively, where ɛ is the central obscuration ratio. We indicate that the best focal plane is shifted from W20 = −W40 to W20 = −(1 + ɛ2)W40. These general results allow us to design and to compare novel apodizers on annular apertures which reduce the influence of W20 and W40. The Strehl ratios of a novel family of apodizers are discussed to illustrate our general results.

© 1988 Optical Society of America

History
Original Manuscript: March 16, 1988
Published: December 15, 1988

Citation
Jorge Ojeda-Castaneda, Eduardo Tepichin, and Amparo Pons, "Apodization of annular apertures: Strehl ratio," Appl. Opt. 27, 5140-5145 (1988)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-27-24-5140

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