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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 21 — Jul. 20, 2007
  • pp: 4549–4554

Subwavelength-grating-induced wavefront aberrations: a case study

Karlton Crabtree and Russell A. Chipman  »View Author Affiliations

Applied Optics, Vol. 46, Issue 21, pp. 4549-4554 (2007)

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The on-axis wavefront aberrations of a one-dimensional subwavelength-grating antireflection coating on an f / 1.7 lens surface are shown to be small with noticeable contributions of defocus, astigmatism, and piston. The astigmatism is 0.02 wave, and the magnitude of the piston approaches one wave peak-to-valley. The difference in aberrations between orthogonally polarized wavefronts, or the retardance aberration, shows 0.01 wave of astigmatismlike variation and more than 0.01 wave of retardance-induced defocuslike variation. A small coupling between polarization states occurs in the form of the familiar Maltese cross, yielding a maximum of 3% coupling in the four diagonal edges of the pupil.

© 2007 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(240.0310) Optics at surfaces : Thin films
(310.1210) Thin films : Antireflection coatings

ToC Category:
Diffraction and Gratings

Original Manuscript: February 6, 2007
Manuscript Accepted: February 23, 2007
Published: July 6, 2007

Karlton Crabtree and Russell A. Chipman, "Subwavelength-grating-induced wavefront aberrations: a case study," Appl. Opt. 46, 4549-4554 (2007)

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