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Proceedings Paper

Feasibility study for parallel recording and retrieving of data by near-field holographic method
Author(s): Byoungho Lee; Jingu Kang; Kyoung-Youm Kim
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Paper Abstract

We present experimental results showing the feasibility of parallel recording and reading of near-field holograms and also of fast data access time using a Si nanometric aperture array. We uses a Si(100) wafer and its anisotropic wet etching for the fabrication of nanometric aperture array. Then, this fabricated aperture array is applied to the storage and reading of binary near-field holograms using the near-field components generated at the aperture as object waves. A brief analysis on the amount of these evanescent components has been presented using the modified Bethe and Bouwkamp's formulation. Two near-field holograms are recorded in parallel and retrieved sequentially successfully with the array in contact with the surface of the photorefractive crystal, which shows the feasibility of parallel recording and reading of near-field holograms. The data access speed (reading speed) can be improved by more than 100 times compared with the case in which a fiber tip of the NSOM records and reads the near-field hologram.

Paper Details

Date Published: 20 November 2002
PDF: 11 pages
Proc. SPIE 4803, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VIII, (20 November 2002); doi: 10.1117/12.452629
Show Author Affiliations
Byoungho Lee, Seoul National Univ. (South Korea)
Jingu Kang, Seoul National Univ. (South Korea)
Kyoung-Youm Kim, Seoul National Univ. (South Korea)


Published in SPIE Proceedings Vol. 4803:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VIII
Francis T. S. Yu; Ruyan Guo, Editor(s)

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