Laser beam scanning using computer-generated holograms.

A new laser grating scanner concept with attractive capabilities is described. The grating used in this scanner is a computer-generated hologram. The constructional parameters of this type of computer-generated hologram are discussed. In addition to achieving a laser beam deflection, the computer-generated hologram can correct the curvature of the scanning beam. Experiments demonstrating the feasibility of this type of scanner in a drum and disk configuration are presented. Realization of two-dimensional scan patterns using computer-generated holograms is illustrated by experimental results.