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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 31 — Nov. 1, 2011
  • pp: G42–G46

Nanoscale ridge aperture as near-field transducer for heat-assisted magnetic recording

Nan Zhou, Edward C. Kinzel, and Xianfan Xu  »View Author Affiliations


Applied Optics, Vol. 50, Issue 31, pp. G42-G46 (2011)
http://dx.doi.org/10.1364/AO.50.000G42


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Abstract

Near-field transducer based on nanoscale optical antenna has been shown to generate high transmission and strongly localized optical spots well below the diffraction limit. In this paper, nanoscale ridge aperture antenna is considered as near-field transducer for heat-assisted magnetic recording. The spot size and transmission efficiency produced by ridge aperture are numerically studied. We show that the ridge apertures in a bowtie or half-bowtie shape are capable of generating small optical spots as well as elongated optical spots with desired aspect ratios for magnetic recording. The transmission efficiency can be improved by adding grooves around the apertures.

© 2011 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(210.4770) Optical data storage : Optical recording
(240.6680) Optics at surfaces : Surface plasmons

History
Original Manuscript: July 21, 2011
Manuscript Accepted: August 18, 2011
Published: October 7, 2011

Citation
Nan Zhou, Edward C. Kinzel, and Xianfan Xu, "Nanoscale ridge aperture as near-field transducer for heat-assisted magnetic recording," Appl. Opt. 50, G42-G46 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-31-G42


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