Localized light focusing and super resolution readout via chalcogenide thin film

Junji Tominaga, Paul Fons, Takayuki Shima, Kazuma Kurihara, Takashi Nakano, Alexander Kolobov, Stephane Petit

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have demonstrated that certain chalcogenide layers within a spinning super-RENS optical disc allow to squeeze the 650 nm laser beam to a spot size as fine as 50 nm using a 15-nm chalcogenide film. The near-field light was focused at a depth of just over 30 nm after passing through a chalcogenide film. Finite-difference time-domain (FDTD) simulations also reproduced these results. We suggest that a conductive ring aperture generated in the chalcogenide layers plays an important role in the localized light focusing.

Original languageEnglish
Title of host publicationScience and Technology of Nonvolatile Memories
Pages79-89
Number of pages11
Publication statusPublished - 2006 Dec 1
Externally publishedYes
Event2006 MRS Spring Meeting - San Francisco, CA, United States
Duration: 2006 Apr 192006 Apr 21

Publication series

NameMaterials Research Society Symposium Proceedings
Volume933
ISSN (Print)0272-9172

Conference

Conference2006 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA
Period06/4/1906/4/21

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Tominaga, J., Fons, P., Shima, T., Kurihara, K., Nakano, T., Kolobov, A., & Petit, S. (2006). Localized light focusing and super resolution readout via chalcogenide thin film. In Science and Technology of Nonvolatile Memories (pp. 79-89). (Materials Research Society Symposium Proceedings; Vol. 933).