2022/12/03 by Saswata Mukherjee, Quentin A. A. Tanguy, Mukherjee, Saswata +11
Engineering · Materials Science · Physics and Astronomy · #Advanced Optical Imaging Technologies #FOS: Physical sciences #Metamaterials and Metasurfaces Applications #Optics (physics.optics) #Photorefractive and Nonlinear Optics
paper · pdf · doi:10.48550/arxiv.2212.01534
openalex publication_date 2022/12/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Ultrathin flat meta-optics have shown great promise for holography in recent years. However, most of the reported meta-optical holograms rely on only phase modulation and neglect the amplitude information. Modulation of both amplitude and phase in meta-optics either requires polarization sensitive meta-atoms, or complex scatterers with stringent fabrication requirements. Additionally, almost all the meta-optical holograms were measured under laser illumination. Here we adopt the concept of double-phase holography, to report polarization-independent holography with both amplitude and phase modulation, using dielectric meta-optics. We validate the implementation of complex phase hologram by measuring an improvement of structural similarity of the reconstructed hologram by ~3x over phase-only holograms. Finally, we demonstrate that meta-optical holography can also be realized using partially incoherent light from a light emitting diode. This observation can significantly reduce the alignment complexity and speckles in laser-based meta-optical holography.