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

Research output: Contribution to journalArticle

39 Scopus citations


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
Issue number18
StatePublished - Sep 15 1987
Externally publishedYes


ASJC Scopus subject areas

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

Cite this