LC-SLM spherical phase model holographic display flexibility improved

The use of a liquid crystal spatial light modulator (LC-SLM) for holographic image display inevitably leads to interference from zero-order spots and multi-level diffraction images. This paper explores the methods for determining the effective reproduction distance and optimal target image size range in the context of LC-SLM holographic reproduction. We introduce a spherical phase model that addresses the impact of the inherent limitations and inaccurate in initial parameter settings of LC-SLM on the holographic reproduction results. The aim is to enhance the flexibility of LC-SLM holographic imaging displays. The efficacy of our method was validated through optical experimentation utilizing a semiconductor laser as the light source, resulting in the generation of high-quality 2D and 3D dynamic holographic displays. The experimental results demonstrate that optimizing the reproduction distance range and target image size can mitigate the effects of LC-SLM zero-order spots and multi-level diffraction images. Furthermore, the incorporation of the spherical phase model effectively addresses the challenges associated with capturing display results, including those caused by inherent LC-SLM defects, initial parameter settings, and flexibility. This integration also facilitates the deployment of LC-SLM in holographic imaging displays and other applications.