Sub-wavelength grating induced wavefront aberrations: A case study

Karlton Crabtree, Russell A. Chipman

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The on-axis wavefront aberrations of a one-dimensional sub-wavelength grating anti-reflection coating on a f/1.7 lens surface is dominated by defocus, astigmatism, and piston. The astigmatism is 0.02 waves and the magnitude of the piston approaches 1 wave peak-to-valley. The difference in aberrations between orthogonally polarized wavefronts, or the retardance aberration, shows 0.01 waves of astigmatism like variation and more than 0.01 waves of retardance induced defocus like variation. Diffraction Gratings; Thin films, sub-wavelength Gratings

Original languageEnglish (US)
Title of host publicationInternational Optical Design Conference 2006
StatePublished - 2006
EventInternational Optical Design Conference 2006 - Vancouver, BC, Canada
Duration: Jun 4 2006Jun 8 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6342 I
ISSN (Print)0277-786X


OtherInternational Optical Design Conference 2006
CityVancouver, BC

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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