2024, Rymov,D.A., Shifrina,A.V., Cheremkhin,P.A., Ovchinnikov,A.S., Krasnov,V.V., Starikov,R.S., Рымов, Дмитрий Андреевич, Шифрина, Анна Владимировна, Черёмхин, Павел Аркадьевич, Овчинников, Андрей Сергеевич, Стариков, Ростислав Сергеевич

2024, Savchenkova, E. A., Ovchinnikov, A. S., Rodin, V. G., Starikov, R. S., Evtikhiev, N. N., Cheremkhin, P. A., Савченкова, Екатерина Алексеевна, Овчинников, Андрей Сергеевич, Родин, Владислав Геннадьевич, Стариков, Ростислав Сергеевич, Евтихиев, Николай Николаевич, Черёмхин, Павел Аркадьевич

2023, Ovchinnikov, A. S., Krasnov, V. V., Cheremkhin, P. A., Rodin, V. G., Savchenkova, E. A., Starikov, R. S., Evtikhiev, N. N., Овчинников, Андрей Сергеевич, Черёмхин, Павел Аркадьевич, Родин, Владислав Геннадьевич, Савченкова, Екатерина Алексеевна, Стариков, Ростислав Сергеевич, Евтихиев, Николай Николаевич

Fast reconstruction of holographic and diffractive optical elements (DOE) can be implemented by binary digital micromirror devices (DMD). Since micromirrors of the DMD have two positions, the synthesized DOEs must be binary. This work studies the possibility of improving the method of synthesis of amplitude binary inline Fresnel holograms in divergent beams. The method consists of the modified Gerchberg–Saxton algorithm, Otsu binarization and direct search with random trajectory technique. To achieve a better quality of reconstruction, various binarization methods were compared. We performed numerical and optical experiments using the DMD. Holograms of halftone image with size up to 1024 × 1024 pixels were synthesized. It was determined that local and several global threshold methods provide the best quality. Compared to the Otsu binarization used in the original method of the synthesis, the reconstruction quality (MSE and SSIM values) is improved by 46% and the diffraction efficiency is increased by 27%.