Demonstration of holographic smart card system using the optical memory technology

Kim, JungHoi; Choi, Jae-Kwang; An, Jun-Won; Kim, Nam; Lee, Kwon-Yeon; Jeon, SeckHee

doi:10.1117/12.473871

Cited by 2 publications

(1 citation statement)

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“…To avoid this fraud, various optical security and encryption systems that use two independent random phase masks have been proposed [2,3]. More recently, a practical realization of a holographic digital security system that combines the electrical biometrics technology with fully digital holographic storage using the random phase encoded reference beam is demonstrated [4,5]. Several materials are available for holography, such as silver halide, dichromated gelatin, ferroelectric crystals, photochromic materials, and photorefractive materials, etc.…”

Section: Introductionmentioning

confidence: 98%

Digital holographic smart card system using an organic-inorganic hybrid type photopolymer film

Kim

Park

et al. 2005

SPIE Proceedings

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Organic-inorganic nanocomposite films were prepared by dispersing an aromatic methacrylic monomer and a photoinitiator in organic-inorganic hybrid sol-gel matrices. The film properties could be controlled by optimizing the content of an organically modified silica precursor (TSPEG) in the sol-gel matrices. The photopolymer film modified with the organic chain (TSPEG) showed high diffraction efficiency (>90%) under an optimized condition. In addition, we implement a digital holographic security system that combines the electrical biometrics technology with fully digital holographic storage using an organic-inorganic hybrid type photopolymer film.

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