Space-bandwidth extension methods in parallel phase-shifting digital holography using a commercially available polarization-imaging camera

Abstract

We present methods for extending the space bandwidth available for recording an object wave in the case where a commercially available polarization-imaging camera is used for recording a hologram required for parallel phase-shifting digital holography. Parallel phase-shifting digital holography has been proposed for achieving single-shot wide-bandwidth three-dimensional imaging and can be implemented by using the polarimetric camera having four polarization-detection channels. However, when such the camera is used, most of the space bandwidth is discarded and then both the field of view and resolution are decreased. In this presentation, an optical implementation and image-reconstruction algorithm for extending the bandwidth are proposed and then these methods and previously proposed techniques are comparatively evaluated.