Creating a dynamic holographic projection typically involves using a spatial light modulator (SLM) to modulate the intensity and/or phase of a light beam. But today’s holograms are limited in terms of quality because current SLM technology only allows for a few low-resolution images to be projected onto separate planes, with low depth resolution.
Researchers have now invented a way to pack more details in a 3D image by creating ultra-high-density planes. “A 3D hologram can present real 3D scenes with continuous and fine features,” said Lei Gong, who led a research team from the University of Science and Technology of China.
"For virtual reality, our method could be used with headset-based holographic displays to greatly improve the viewing angles, which would enhance the 3D viewing experience. It could also provide better 3D visuals without requiring a headset."
Citation: P. Yu et al. Gong, “Ultrahigh-density 3D Holographic Projection by Scattering-assisted Dynamic Holography,” 10, 4 (2023). DOI: 10.1364/OPTICA.483057. https://opg.optica.org/optica/fulltext.cfm?uri=optica-10-4-481&id=528843 (open-access).