Parallel phase-shifting digital holography

Method for extending the space bandwidth in parallel phase-shifting digital holography using a commercially available polarization-imaging camera

“…Although an object image was reconstructed by each PPSDH, the edges of the object were not reconstructed by previously reported PPSDH [4]. This is because the SBW available for recording and reconstructing an object wave is restricted in previous PPSDH.…”

“…We simulated PPSDH using the polarization-imaging camera with the previous method [4] and proposed one numerically. λ was assumed as 633 nm.…”

“…Parallel phase-shifting digital holography [4,5] (PPSDH) is a technique for recording phase-shifted holograms with a single-shot exposure by space-division multiplexing. Since an array of optical elements is required to implement PPSDH and a commercially available polarization-imaging camera[6] can be applied to the implementation.…”

“…We conduct numerical simulations and quantitative evaluations to verify the proposed method. Figure 1 shows the basic concept of PPSDH [4,5]. Multiple phase-shifted holograms are simultaneously recorded with a single-shot exposure by using space-division multiplexing.…”

“…Multiple phase-shifted holograms are simultaneously recorded with a single-shot exposure by using space-division multiplexing. An object image is reconstructed from a single hologram by an image-reconstruction algorithm [4,5]. In this holography, the SBW available for recording an object wave is inversely proportional to the number of phase shifts [8].…”