The influence of diffraction gratings relief noise on the intensity distribution in diffraction orders

5th International Conference of Photonics and Information Optics

Kolyuchkin, V.V.^1 ; Odinokov, S.B.^1

Bauman Moscow State Technical University, 2nd Baumanskaya str. 5, Moscow

105005, Russia^1

关键词: Correlation function;    Diffraction orders;    Intensity distribution;    Mathematical expressions;    Phase parameters;    Quality inspection;    Security holograms;    Standard deviation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/737/1/012070/pdf
DOI  :  10.1088/1742-6596/737/1/012070

来源: IOP

【 摘 要 】

The method of security hologram quality inspection, in which the relief phase parameters are determined by registering results of the intensity distribution in diffraction orders, is known. The profile of relief as a harmonious distribution is represented. Deviation of the real relief profile from the ideal profile, another words phase relief noise, influence on the accuracy of this method. In the paper, on the assumption of homogeneity of the phase relief noise, the mathematical expressions for evaluating the influence of the phase relief noise on the intensity distribution in the diffraction orders are represented. Parameters of the correlation functions approximation describing the phase relief noise are determined. The dependence of the intensity values from the standard deviation of the phase relief noise is represented.