Fast phase-only hologram calculation with a shared phase mask optimized from an image dictionary

Shuming Jiao; Yang Gao; Ting Lei; Zhenwei Xie; Xiaocong Yuan

doi:10.1117/12.2542496

12 March 2020 Fast phase-only hologram calculation with a shared phase mask optimized from an image dictionary

Shuming Jiao, Yang Gao, Ting Lei, Zhenwei Xie, Xiaocong Yuan

Proceedings Volume 11434, 2019 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 114340F (2020) https://doi.org/10.1117/12.2542496
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

A common phase-type spatial light modulator (SLM) can only modulate the phase part of a complex-amplitude hologram calculated from an object image. To calculate a phase-only hologram, iterative methods such as the Gerchberg–Saxton algorithm can be employed. However, one-step non-iterative phase-only hologram calculation is more favorable for real-time applications. This paper proposes a novel scheme to optimize a shared phase mask from a set of training images. Then a phase-only hologram can be simply calculated by phase truncation after any given object image similar to the training samples is multiplied with the shared mask and Fresnel diffracted. The speckle noise in the reconstructed images can be significantly suppressed if our optimized phase mask is used instead of a conventional random phase mask.

Citation Download Citation

Shuming Jiao, Yang Gao, Ting Lei, Zhenwei Xie, and Xiaocong Yuan "Fast phase-only hologram calculation with a shared phase mask optimized from an image dictionary", Proc. SPIE 11434, 2019 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 114340F (12 March 2020); https://doi.org/10.1117/12.2542496

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