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Optics Letters

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  • Vol. 25, Iss. 1 — Jan. 1, 2000
  • pp: 67–69

7.5-MHz data-transfer rate with a planar aperture mounted upon a near-field optical slider

Hiroshi Yoshikawa, Yasuko Andoh, Manabu Yamamoto, Kenji Fukuzawa, Toshiaki Tamamura, and Toshifumi Ohkubo  »View Author Affiliations


Optics Letters, Vol. 25, Issue 1, pp. 67-69 (2000)
http://dx.doi.org/10.1364/OL.25.000067


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Abstract

We fabricated a planar aperture–mounted (PAM) slider by use of a focused ion beam to demonstrate fast data acquisition for near-field optical data storage. The aperture (200 nm × 500 nm) was formed upon the Ti-coated air-bearing surface of the slider and was directly illuminated with a laser (λ = 532 nm) beam spot by use of an objective lens (N.A., 0.55). The light transmitted through the aperture was modulated by a Ti-coated SiO<sub>2</sub> disk with 200- and 400-nm-wide line-and-space (L&S) patterns engraved by electron-beam lithography. The optical throughput of the taperless aperture was greater than 0.02. By use of the PAM slider, 400- and 200-nm L&S signals were detected at linear velocities of 6 and 3 m/s, respectively, corresponding to a data-transfer rate of 7.5 MHz.

© 2000 Optical Society of America

OCIS Codes
(210.0210) Optical data storage : Optical data storage
(210.4590) Optical data storage : Optical disks
(210.4680) Optical data storage : Optical memories

Citation
Hiroshi Yoshikawa, Yasuko Andoh, Manabu Yamamoto, Kenji Fukuzawa, Toshiaki Tamamura, and Toshifumi Ohkubo, "7.5-MHz data-transfer rate with a planar aperture mounted upon a near-field optical slider," Opt. Lett. 25, 67-69 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-1-67


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