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


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
Number of pages11
Publication statusPublished - 2006
Externally publishedYes
Event2006 MRS Spring Meeting - San Francisco, CA, United States
Duration: 2006 Apr 192006 Apr 21

Publication series

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


Conference2006 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA

ASJC Scopus subject areas

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


Dive into the research topics of 'Localized light focusing and super resolution readout via chalcogenide thin film'. Together they form a unique fingerprint.

Cite this