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

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 proceeding › Conference 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 language	English
Title of host publication	Science and Technology of Nonvolatile Memories
Pages	79-89
Number of pages	11
Publication status	Published - 2006 Dec 1
Externally published	Yes
Event	2006 MRS Spring Meeting - San Francisco, CA, United States Duration: 2006 Apr 19 → 2006 Apr 21

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	933
ISSN (Print)	0272-9172

Conference

Conference	2006 MRS Spring Meeting
Country	United States
City	San Francisco, CA
Period	06/4/19 → 06/4/21

ASJC Scopus subject areas

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

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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).

Localized light focusing and super resolution readout via chalcogenide thin film. / Tominaga, Junji; Fons, Paul; Shima, Takayuki; Kurihara, Kazuma; Nakano, Takashi; Kolobov, Alexander; Petit, Stephane.

Science and Technology of Nonvolatile Memories. 2006. p. 79-89 (Materials Research Society Symposium Proceedings; Vol. 933).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Nakano, Takashi

AU - Kolobov, Alexander

AU - Petit, Stephane

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AB - 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.

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