Analysis of astigmatic focusing and push-pull tracking error signals in magnetooptical disk systems

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Abstract

Methods of geometrical optics are used in deriving a simple expression for the focus error signal in terms of the parameters of an astigmatic system. The extent of validity of this result is then examined by comparison with diffraction calculations. Diffraction analysis also permits the study of push-pull tracking error signal from pregrooved disk surfaces.

Original languageEnglish (US)
Pages (from-to)3981-3986
Number of pages6
JournalApplied optics
Volume26
Issue number18
DOIs
StatePublished - Sep 15 1987
Externally publishedYes

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ASJC Scopus subject areas

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

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