Beam shaping for optical data storage

Edwin P. Walker, Thomas D Milster

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

One application of beam shaping is to improve signal quality in optical data storage systems. 1 Since the light source in an optical data storage device is a coherent laser beam, simple beam-shaping techniques can greatly influence the performance of the system. Beam-shaping elements take the form of spatially dependent optical filters that are strategically placed in the light path. This chapter discusses theory, simulations, and practical implementation for beam-shaping techniques used in optical data storage. The storage and retrieval of data on optical disks are described in two simple steps. First, data marks are recorded on a surface. The second step is retrieval of the information from the disk, where a focused light beam scans the surface. Modulation in the reflected light is used to detect the data-mark pattern under the scanning spot.

Original languageEnglish (US)
Title of host publicationLaser Beam Shaping Applications, Second Edition
PublisherCRC Press
Pages211-234
Number of pages24
ISBN (Electronic)9781498714426
ISBN (Print)9781498714419
DOIs
StatePublished - Jan 1 2017

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)
  • Materials Science(all)

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  • Cite this

    Walker, E. P., & Milster, T. D. (2017). Beam shaping for optical data storage. In Laser Beam Shaping Applications, Second Edition (pp. 211-234). CRC Press. https://doi.org/10.1201/9781315371306