Optical Review
Print ISSN : 1340-6000
ISSN-L : 1340-6000
Interpolation Method for Computer-Generated Holograms Using Random Phase Technique
Nobukazu YOSHIKAWAToyohiko YATAGAI
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1999 Volume 6 Issue 5 Pages 433-438

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Abstract
An interpolation method for reconstructed images of computer-generated holograms (CGHs) enables one to synthesize CGHs with a large space bandwidth product (SBWP) from CGHs with a small SBWP. The phase information of objects is regarded as constant because the method is based on digital image processing techniques. Therefore, diffraction efficiency is low due to the saturation effect in the recording process. To improve the diffraction efficiency, a random phase technique is employed for the interpolation method to the CGH. Effects of the random phase in the reconstructed image are discussed in several interpolation types. The interpolation method is also applied to a kinoform. Some computer simulations and optical experiments are presented.
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© 1999 by the Optical Society of Japan
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