Pupil plane filtering for improved signal detection in an optical data storage system incorporating a solid immersion lens

Kei Shimura, Tom D. Milster, Kusato Hirota, Joshua S. Jo

Research output: Contribution to journalConference article

Abstract

A new method that significantly improves signal contrast when using solid immersion lens (SIL) optics with a certain phase-change recording layer structure is proposed. Linearly polarized light is used to illuminate the lens that focuses light onto the medium, and a special filter is used to block negative signal components from reaching the detector after light is reflected from the recording layers. Numerical calculation showed that the minimum contrast can be improved from near zero to over 0.25 by the filtering.

Original languageEnglish (US)
Pages (from-to)378-380
Number of pages3
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3864
StatePublished - Dec 1 1999
Externally publishedYes
EventProceedings of the 1999 Joint International Symposium on Optical Memory and Optical Optical Data Storage (ISOM/ODS'99) - Koloa, HI, USA
Duration: Jul 12 1999Jul 15 1999

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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