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: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


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
Pages (from-to)41-51
Number of pages11
JournalMaterials Research Society Symposium Proceedings
Publication statusPublished - 2006
Externally publishedYes
Event2006 MRS Spring Meeting - San Francisco, CA, United States
Duration: 2006 Apr 192006 Apr 21

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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