Efficient Array Illuminator Using Binary-Optics Phase Plates at Fractional-TalbotPlanes

摘要

A phase plate is described based on the fractional-Talbot effect that converts asingle expanded laser beam into a regular array of uniformly illuminated apertures with virtually 100% efficiency. The size, spacing, and fill factor of the illuminated aperture grid can be freely chosen to interface with a variety of electro-optic devices. A binary-optics phase plate is demonstrated that converts uniform illumination into an array of square illumination cells with a fill factor of 1/16. Keywords: Phase plates; Electro-optic devices; Square illumination cells; Reprints. (jhd)