Serial number coding and decoding by laser interference direct patterning on the original product surface for anti-counterfeiting | Zendy

InYong Park | Zendy; Sanghoon Ahn | Zendy; YoungDuk Kim | Zendy; Han-Sung Bae | Zendy; Heeshin Kang | Zendy; Jason J. Yoo | Zendy; Jiwhan Noh | Zendy

Open Access

Serial number coding and decoding by laser interference direct patterning on the original product surface for anti-counterfeiting

Author(s) -

InYong Park,

Sanghoon Ahn,

YoungDuk Kim,

Han-Sung Bae,

Heeshin Kang,

Jason J. Yoo,

Jiwhan Noh

Publication year - 2017

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.25.014644

Subject(s) - optics , diffraction , laser , diffraction grating , materials science , grating , interference (communication) , diffraction efficiency , physics , computer science , telecommunications , channel (broadcasting)

Here, we investigate a method to distinguish the counterfeits by patterning multiple reflective type grating directly on the surface of the original product and analyze the serial number from its rotation angles of diffracted fringes. The micro-sized gratings were fabricated on the surface of the material at high speeds by illuminating the interference fringe generated by passing a high-energy pulse laser through the Fresnel biprism. In addition, analysis of the grating's diffraction fringes was performed using a continuous wave laser.

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