High density phase change optical recording using a solid immersion lens

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

Research output: Contribution to journalConference articlepeer-review

8 Scopus citations


The use of solid immersion lens (SIL) optical head for high density phase change recording was demonstrated. Amorphous marks of 300nm in diameter were written and erased using the SIL (NAeff=1.1). This technique can be further improved and can achieve a higher density recording by using a shorter wavelength semiconductor laser and a higher refractive index lens mounted on a near contact or in-contact head slider.

Original languageEnglish (US)
Pages (from-to)34-39
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1998
EventOptical Data Storage 1998 - Aspen, CO, United States
Duration: May 10 1998May 13 1998


  • High density recording
  • Near-field optics
  • Phase change recording
  • Solid immersion lens

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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