title: Phase-shifting color digital holography.
abstract: Digital holography with a three-wavelength laser and a color CCD has been demonstrated. With the phase shifting of the reference beam, in-line holograms for three wavelengths are recorded simultaneously for derivation of the complex amplitude at each wavelength, and then the three monochromatic images are reconstructed and combined into full-color images in the computer. Laser power variation for wavelengths can be compensated for in the reconstruction process. We have compared the images reconstructed by two algorithms using a single Fourier transformation and a convolution with each other by both experiments and numerical simulations. Phase-shifting errors arising at two of the three wavelengths have proved not to cause serious deterioration of the reconstructed images.
authors.forename: Ichirou
authors.initials: I
authors.lastname: Yamaguchi
authors.forename: Tatsuki
authors.initials: T
authors.lastname: Matsumura
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Kato