Partially coherent double phase holography in visible using meta-optics
Abstract
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.
Cite
@article{arxiv.2212.01534,
title = {Partially coherent double phase holography in visible using meta-optics},
author = {Saswata Mukherjee and Quentin A. A. Tanguy and Johannes E. Froech and Aamod Shanker and Karl F. Boehringer and Steven Brunton and Arka Majumdar},
journal= {arXiv preprint arXiv:2212.01534},
year = {2022}
}