Meter-depth and multi-polarization addressable zoom 3D meta-holography

Propelled by rapid advances in nanofabrication, meta-holography has become a frontier hot spot in optics. 3D meta-holography, in particular the large depth and multi-polarization addressable ones, with extraordinary expansion of the control dimension and information capacity, offers tremendous application prospects. However, the existing meta-holography is predominantly limited to a centimeter-level depth range, and independent regulation of multi-polarization is difficult to achieve. Here, we propose a meter-depth and multi-polarization addressable zoom 3D meta-holography. By revealing a polarization-multiplexed 3D Fourier meta-holographic diffraction principle, the designed metasurface not only overcomes the conventional depth range limitations, but also enables multiple polarization control. By developing the special liquid materials, a 6 mm large-aperture polarized liquid lens with high focal power is proposed and integrated with the metasurface. Furthermore, the designed polarized liquid lens achieves simultaneous regulation capability of both focal length and polarization state by using a single driving voltage based on the integration of the liquid crystal light valve. The proposed meta-holography achieves multi-polarization addressable 3D reconstruction, with the depth of the meta-holographic image extending to the meter scale, which is ~80 times larger than that of the conventional Fourier meta-holography. This meter-scale depth and multi-polarization addressable zoom 3D meta-holography is expected to meet broad application requirements in encryption, optical storage and super-resolution imaging. The authors report a large aperture polarized liquid lens integrated with a metasurface for multi-polarization addressable 3D reconstruction. The depth of the meta-holographic image extends to the meter scale, offering routes to application in encryption, optical storage, and imaging.