title: Synthetic diffractive elements for security applications realized on an enhanced integral dot-matrix system.
abstract: One of the important fields of application of synthetic diffractive structures is optical document security. Several methods of security enhancement of diffractive elements for security applications are presented, namely, high carrier-frequency cryptograms and noise-covered elements are introduced. Structures are designed with respect to the fabrication on special enhanced integral dot-matrix system.
authors.affiliation: Department of Physical Electronics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Brehová 7, Prague 1, 115 19, Czech Republic. skeren@troja.fjfi.cvut.cz
authors.forename: Marek
authors.initials: M
authors.lastname: Skeren
authors.forename: Pavel
authors.initials: P
authors.lastname: Fiala
authors.forename: Ivan
authors.initials: I
authors.lastname: Richter