Achromatic phase retarder by slanted illumination of a dielectric grating with period comparable with the wavelength

Nandor Bokor, Revital Shechter, Nir Davidson, Asher A. Friesem, Erez Hasman

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

We discuss some properties of dielectric gratings with period comparable with the illuminating wavelength for slanted illumination (this illumination geometry is often referred to as concical mounting). We demonstrate the usefulness of such an illuminating geometry. We show that the threshold period (under which only the zeroth transmission and reflection orders are nonevanescent) can be significantly higher, thereby easing fabrication constraints, and that this illumination setup makes it possible to design achromatic phase retarders. Such a design, for an achromatic quarter-wave plate with λ/60 uniformity of the retardation phase in the 0.47–0.63–μm wavelength interval, is demonstrated.

Original languageEnglish
Pages (from-to)2076-2080
Number of pages5
JournalApplied Optics
Volume40
Issue number13
DOIs
Publication statusPublished - May 1 2001

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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