Abstract

Fresnel incoherent correlation holography (FINCH) is a technology that can acquire three-dimensional information of incoherent objects such as fluorescence with an in-line optical system. However, it is difficult to apply FINCH to dynamic phenomena, since FINCH has to detect phase-shifted holograms sequentially to eliminate twin and zero-order images. In this paper, a method in which the phase-shifted holograms can be obtained simultaneously with an in-line setup by using an optimized simulated diffraction optical element (sDOE), realized by a phase-only spatial light modulator, is proposed. The optimized sDOE is an optical device with a dual-focus lens, 2D grating, and spatial phase shifter. Therefore, the sDOE is called a dual-focus checkerboard lens. The optical experiment confirms the feasibility of the proposed method.

© 2020 Optical Society of America

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Supplementary Material (4)

NameDescription
Visualization 1       reconstruction movie for the even method.
Visualization 2       reconstruction movie for the adjusted method.
Visualization 3       alternate reconstructed images by both methods at 168 mm
Visualization 4       alternate reconstructed images by both methods at 217 mm

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