Abstract
We propose a compressive self-interference incoherent digital holography (SIDH) with a geometric phase metalens for section-wise holographic object reconstruction. We specify the details of the SIDH with a geometric phase metalens design that covers the visible wavelength band, analyze a spatial distortion problem in the SIDH and address a process of a compressive holographic section-wise reconstruction with analytic spatial calibration. The metalens allows us to realize a compressive SIDH system in the visible wavelength band using an image sensor with relatively low bandwidth. The operation of the proposed compressive SIDH is verified through numerical simulations.
Highlights
Digital holography is a key component of next-generation three-dimensional (3D)camera and imaging technology
The hologram reconstruction at a particular depth is classified into two branches: backpropagation-based field reconstruction and compressive holography-based optical sectioning, both at the same depth
The pressive holographic reconstruction scheme based on the model was tested and the features compressive holographic reconstruction scheme based on the model was tested and the of the distortion mapping between the real object space and the distorted reconstruction features of the distortion mapping between the real object space and the distorted reconspace related to the holographic reconstruction were clarified
Summary
Coherent digital holography has limitations for many practical To overcome these limitations, the basic schemes of recording and reconstructing the incoherent hologram were proposed by the earliest reports using the self-interference technique [7,8,9,10,11] to modulate incoherent object scenes into the holographic self-interfering patterns, and several related systems have been developed. Choi et al reported the incoherent digital holographic camera system with a liquidcrystal geometric phase (LCGP) lens using the in-line self-interference concept [31,32]. They succeeded in the compact implementation of an LCGP in-line system using a focal-point array with a micro-polarizer array embedded for real-time phaseshifting digital holography [33]. The depth and lateral scale distortion along the optic axis of SIDH should be calibrated correctly
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