Multidimension-multiplexed Holography with Daily-use Light

Abstract

We present a holography technique with daily-use light in which multidimensional information such as three-dimensional (3D) space, phase, wavelength, and polarization are simultaneously recorded as a multiplexed hologram. Multidimensional information is actively acquired in the field of machine vision and utilized for object recognition. Holography is well known as a technique to acquire multidimensional information on a two-dimensional (2D) recording material by introducing laser light sources and spatial or temporal frequency-division multiplexing. We have enabled multidimension-multiplexed holographic imaging with a monochrome image sensor without spatial or temporal frequency-division multiplexing by developing the computational coherent superposition (CCS) scheme. Exploiting CCS and incoherent digital holography or self-reference digital holography, we achieved simultaneous holographic image sensing of multidimensional information with daily-use light and a monochrome image sensor. We present optical designs to realize the proposed holography and the experimental results obtained with the developed optical systems.