Erlangen 2026 – wissenschaftliches Programm

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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 8: Poster Session

MP 8.6: Poster

Mittwoch, 18. März 2026, 18:00–18:45, Redoutensaal

Modeling and simulation of diffraction efficiency growth during holographic grating recording — •Alexei Meshalkin, Elena Achimova, Vladimir Abaskin, Veronica Cazac, Constantin Losmanschii, and Vladislav Botnari — Institute of Applied Physics, Moldova State University, Chisinau, Moldova

This work presents theoretical and numerical studies on the modeling of wave propagation and light matter interaction during the recording of holographic diffraction gratings. The simulations focus on the evolution of diffraction efficiency as a function of the grating profile, spatial period, and phase-relief depth. Numerical modeling was implemented in MATLAB using the Angular Spectrum Method for light propagation, where all grating parameters were defined based on corresponding experimental data. The obtained simulation results were compared with experimental measurements for holographic gratings recorded in thin films of azopolymers and chalcogenide amorphous materials. A good correlation between the simulated and measured diffraction efficiencies confirms the applicability of the proposed numerical model for describing holographic recording processes. Moreover, the developed approach enables solving the inverse problem: determining grating parameters from measured diffraction efficiency.

Keywords: Holographic diffraction gratings; Diffraction efficiency modeling; Angular Spectrum Method; Light–matter interaction; Numerical simulation of holographic recording