A metasurface hologram is an ultra-thin surface that is capable of arbitrarily shaping and projecting laser beams to extremely wide angles. However, due to the high coherence of laser light and inevitable defects in the metasurface, holographic images produced by meta-holograms suffer from deleterious artifacts that are extremely difficult to remove. A US-China team developed an efficient method to suppress holographic defects by fine-tuning the spatial coherence of laser illumination with a novel laser.