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Single-shot color digital holography based on spatial frequency-division multiplexing and space-bandwidth capacity-enhance

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Digital holography [1] is a technique for recording a digital hologram to obtain the wavefront of an object wave and then reconstructing both the three-dimensional (3D) and quantitative phase images of the object using a computer. Color information is obtained by recording multiple wavelengths, which is called color digital holography [2]. Color digital holography utilizing spatial frequency-division multiplexing [3] is implemented with a single-shot exposure of a monochromatic image sensor by using a reference beam. However, Space bandwidth available for recording an object wave is severely restricted and the crosstalk between the object waves with different wavelengths occurs easily when capturing a 3D area.

© 2014 Japan Society of Applied Physics, Optical Society of America

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