Simple semi continuous holographic optical elements

Abstract

Using a binary computer-generated hologram (BCGH) made of different thin stripes, one can modify its phase and amplitude pattern and in turn correct and redirect a scanning beam. If the scanning beam is larger than one single stripe, the segmented phase function looks like a continuous one for the incident beam and a smooth curve is reconstructed in space. We show a very simple BCGH that permits the study of the interesting characteristics of this type of computer generated hologram (CGH) at low cost. Numerical as well as experimental results are discussed. This method is very promising in developing large-scale CGHs, holographic display systems, and optical interconnects.