Near-field optical data storage: Avenues for improved performance

Research output: Contribution to journalConference articlepeer-review


Because they produce small spot size, near-field techniques are applied to optical data storage systems in order to increase recording density. For data storage, the optical near field is defined in terms of evanescent coupling between the system used to read data and the recording layer. Two practical implementations that use evanescent energy are aperture probes and solid immersion lenses (SILs). In this paper, the basic characteristics of these systems are reviewed, and some considerations for improving performance are discussed. Combinations of SILs and apertures could produce data storage systems with ultra-fine resolution and good detection characteristics.

Original languageEnglish (US)
Pages (from-to)126-134
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2000
EventOptical Storage and Optical Information Processing - Taipei, Taiwan
Duration: Jul 26 2000Jul 27 2000

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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