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Proceedings Paper

Optical fabrication of 3D scattering medium for secure optical memory card
Author(s): Osamu Matoba; Yuri Kitamura; Kouichi Nitta; Wataru Watanabe
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Paper Abstract

We review an optical secure memory card using a three-dimensional (3D) scattering medium and 3D absorbers. The information of 3D absorbers such as position, size, and number can be used as 3D data. The strong scattering effect can make the data secure for measuring them by interferometer. To recover the absorption distribution, a computational method is developed. We show the numerical results of the reconstructed absorption distribution and then show how important to control the scattering coefficient in a volume medium. We also present preliminary experimental results to make a scattering medium by using holes created by irradiation of femtosecond laser pulse.

Paper Details

Date Published: 6 May 2009
PDF: 8 pages
Proc. SPIE 7329, Three-Dimensional Imaging, Visualization, and Display 2009, 73290N (6 May 2009); doi: 10.1117/12.820512
Show Author Affiliations
Osamu Matoba, Kobe Univ. (Japan)
Yuri Kitamura, Kobe Univ. (Japan)
Kouichi Nitta, Kobe Univ. (Japan)
Wataru Watanabe, National Institute of Advanced Industrial Science and Technology (Japan)


Published in SPIE Proceedings Vol. 7329:
Three-Dimensional Imaging, Visualization, and Display 2009
Bahram Javidi; Jung-Young Son; Manuel Martinez-Corral; Fumio Okano; Wolfgang Osten, Editor(s)

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