A novel method of making a dot-array color hologram in one step with a prefabricated reference beam encoding plate (RBEP) is proposed. This RBEP can produce three sets of dot-array reference beams simultaneously, which are spatially separated on the recording plane and overlap three digital images that correspond, respectively, to the three primary color images of a color object at the same time. Therefore only one exposure is needed for recording the color hologram. Both the theoretical analysis and experimental results that confirm the feasibility of this approach are given.
© 2002 Optical Society of America
(090.2870) Holography : Holographic display
(090.5640) Holography : Rainbow holography
(100.3010) Image processing : Image reconstruction techniques
(210.4770) Optical data storage : Optical recording
Cheng-Shan Guo, De-An Liu, L. Z. Cai, and Q. Liu, "One-step recording of a dot-array color hologram with a reference beam encoding plate," Opt. Lett. 27, 1821-1823 (2002)