Air holes turn silicon wafers into flat ultraviolet focusing mirrors for compact optics

Traditional lenses and mirrors focus light using curved surfaces. Metasurfaces can achieve similar functions with a flat layer of nanoscale structures that locally control the phase of light. Extending these flat optics into the ultraviolet could support compact systems for high- This story matters for Science & Discovery readers tracking mech. Reported by phys.org. Read the full original at the source link below.