Related Experiment Video
Updated: May 28, 2025
08:48
Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
Published on: September 25, 2020
5.7K
Polarization-controlled metasurface for simultaneous holographic display and three-dimensional depth perception
Shuhan Guo1, Yifan Shao1, Junjie Zhan1
1State Key Lab of Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, International Research Center for Advanced Photonics (Haining Campus), Zhejiang University, Hangzhou 310058, China.
Nanophotonics (Berlin, Germany)
|February 10, 2025
Summary
This study introduces a novel metasurface capable of both holographic display and Dammann grating projection. This breakthrough enables compact, integrated optical systems for advanced intelligent visual technologies.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Simultaneous optical display and depth perception are essential for intelligent technologies but are hindered by bulky, non-integrated systems.
- Metasurfaces, engineered 2D optical surfaces, offer a path toward miniaturized optical devices with complex functionalities.
- Current technologies lack integrated solutions for both high-quality imaging and depth perception.
Purpose of the Study:
- To develop a single metasurface device capable of performing dual optical functions: holographic display and Dammann grating projection.
- To demonstrate the feasibility of functional switching between these optical modes using tailored incident polarization.
- To explore the potential of this metasurface in 3D reconstruction and advanced visual systems.
Main Methods:
- Fabrication of a polarization-multiplexed metasurface with tailored subwavelength structures.
- Characterization of the metasurface's optical response under different incident polarizations.
- Experimental demonstration of holographic image projection and Dammann grating-based spot cloud generation.
- Conducting projection and 3D reconstruction experiments to assess spatial information retrieval capabilities.
Main Results:
- The metasurface successfully switched between holographic display and Dammann grating functionalities based on incident polarization.
- High-quality holographic images were displayed in the Fresnel region.
- A uniform spot cloud covering nearly 180° × 180° was projected using the Dammann grating mode.
- The 3D reconstruction experiment demonstrated the system's potential for retrieving complex spatial information.
Conclusions:
- A single polarization-multiplexed metasurface can achieve both holographic imaging and wide-angle beam splitting.
- This technology offers a significant advancement for lightweight, highly integrated optical systems.
- The developed metasurface is particularly promising for next-generation intelligent visual technologies requiring both display and depth perception.
