11 October 2011 Synthesis of diffractive structures
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Proceedings Volume 8306, Photonics, Devices, and Systems V; 83060V (2011); doi: 10.1117/12.912326
Event: Photonics Prague 2011, 2011, Prague, Czech Republic
Abstract
Our paper deals with advanced approaches exploiting electron-beam lithography origination technologies in order to produce the so-called DOVIDs offering new visual features, though based on subwavelength origination. Synthesized security elements are recorded with a resolution reaching even 2,500.000 dpi and are specially developed for the security measures of the most important state valuable documents. We shall mention some principal features, where the ultra-precise recording of diffractive elements is requested.
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Libor Kotacka, Petr Vizdal, Tomas Behounek, "Synthesis of diffractive structures", Proc. SPIE 8306, Photonics, Devices, and Systems V, 83060V (11 October 2011); doi: 10.1117/12.912326; https://doi.org/10.1117/12.912326
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KEYWORDS
Visualization

Holography

Electron beams

Forensic science

Holograms

Computer security

Diffraction

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