One-Shot Digital Holography Using Polarization Imaging With a Pixelated Micro-Retarder Array
Digital holography is becoming popular technique in the fields not only of experimental mechanics but of optical information processing [1, 2, 3, 4]. Phase-shifting technique is usually used for obtaining reconstructed images efficiently and accurately. However, the phase-shifting technique requires more than three images for a fully complex fields. That is, the current phase-shifting method has the disadvantage of a time lag during phase-shifting and acquisition between phase steps. This means that the current techniques cannot be applied to time-variant problems such as mechanics of vibrating objects or time-dependent materials. Recently, some techniques have been proposed for reducing images for phase-shifting digital holography [5,6]. However, it is not yet possible to record phase-stepped images simultaneously in a single frame.