Modulated gratings and grating-modulated holograms: their spectral and polarization properties and protection possibilities

• Autorzy: Szyjer M. , Kraska Z. , Kowalik A.
• Języki publikacji: EN

Abstrakty

EN

Gratings produced by using electron beams (e-beam gratings) and simple rainbow holograms modulated by sinusoidal holographic gratings of relatively high spatial frequency (2500-4100 lines/mm) are the subject of this paper. Their spectral properties and abilities to polarize the light are qualified as a significant feature for the comparison of an original grating/holographic structure with its copies. The results obtained allow us to suppose that holograms modulated by gratings of various relief profiles can be very difficult to counterfeit, especially to remake.

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2002
• Tom: Vol. 32, nr 1-2
• Strony: 61--73
• Opis fizyczny: bibliogr. 22 poz.

Twórcy

autor

Szyjer M.

autor

Kraska Z.

autor

Kowalik A.

• Institute of Applied Optics, ul. Kamionkowska 18, 03-805 Warszawa