High Quality Wave Front Reconstruction for Phase-Shifting Color Digital Holography

This paper presented a method for recording and reconstructing high-quality digital color holographic images. Digital holography with three different wavelength lasers and a monochrome CCD has been demonstrated. With the phase-shifting of the reference beam, in-line holograms for three wavelengths are recorded successively for derivation of the complex amplitude at each wavelength. The three monochromatic interferograms are reconstructed and combined into full-color images in the computer. Laser power variation for wavelength can be compensated for the reconstruction process.