Tilt correction in an optical disk system

Ronald E. Gerber, M. Mansuripur

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

A servo system for the correction of disk tilt in optical disk data storage is proposed, and its basic concepts are demonstrated by the use of a static system in which the disk does not spin. Because disk tilt produces primarily coma in the beam focused onto the disk, the system uses a variable coma generator to produce an equal and opposite amount of coma as that caused by the tilted disk. The magnitude and direction of disk tilt are detected by the use of the light reflected from the front facet of the disk substrate.

Original languageEnglish (US)
Pages (from-to)7000-7007
Number of pages8
JournalApplied optics
Volume35
Issue number35
DOIs
StatePublished - Dec 10 1996

ASJC Scopus subject areas

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

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