Polarization holography generally depends on polarization-sensitive materials to reconstruct vectorial images, hindering the reconfigurability of the polarization hologram. As a result, it remains challenging to realize dynamic polarization holography that requires the hologram to integrate reconfigurability with vectorial wavefront control. Here, we demonstrate dynamic vectorial holographic projections by using a scattering material-based reconfigurable hologram. The hologram is composed of a scattering material and a digital hologram. The scattering material made of polyvinylidene fluoride nanofibers transforms the incident light into a speckle field with space-variant polarization states. Then, wavefront control of the hologram enables reconstruction of arbitrary vectorial images with reconfigurability. The scattering-enabled polarization holographic technique enables encoding multiple images with six polarization channels that can be flexibly switched. Furthermore, dynamic polarization-multiplexed image projection at a frame rate of up to 22, 270 fps can be achieved. A polarization-dependent 3D multiplane projection is also demonstrated. Our approach offers a unique avenue to dynamic holographic techniques with polarization multiplexing capability.

中文翻译：

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由基于散射材料的可重构全息图实现的动态偏振全息投影

偏振全息术通常依赖于偏振敏感材料来重建矢量图像，阻碍了偏振全息图的可重构性。因此，实现需要全息图将可重构性和矢量波前控制相结合的动态偏振全息术仍然具有挑战性。在这里，我们通过使用基于散射材料的可重构全息图来演示动态矢量全息投影。全息图由散射材料和数字全息图组成。由聚偏二氟乙烯纳米纤维制成的散射材料将入射光转化为具有空间变化偏振态的散斑场。然后，全息图的波前控制可以重建具有可重构性的任意矢量图像。启用散射的偏振全息技术可以使用六个可以灵活切换的偏振通道对多个图像进行编码。此外，可以实现帧速率高达 22、270 fps 的动态偏振复用图像投影。还展示了偏振相关的 3D 多平面投影。我们的方法为具有偏振复用功能的动态全息技术提供了独特的途径。