Off-axis digital holographic multiplexing for rapid wavefront acquisition and processing

• DOI: 10.1364/aop.384612
• Publication Date: 2020-06-02T19:00:08Z
• Authors: Natan T. Shaked; Vicente Micó; Maciej Trusiak; Arkadiusz Kuś; Simcha K. Mirsky
• Keywords: Digital holography; Digital Holographic Microscopy

Off-axis holographic multiplexing involves capturing several complex wavefronts, each encoded into off-axis holograms with different interference fringe orientations, simultaneously, a single camera acquisition. Thus, the multiplexed hologram can capture wavefronts at once, where one encodes information from sample, using same number of pixels typically required for acquiring conventional encoding only sample wavefront. This gives rise to many possible applications, focus on acquisition dynamic samples, hundreds scientific papers already published in last decade. These include field-of-view multiplexing, depth-of-field angular perspective tomographic phase microscopy 3-D refractive index imaging, multiple wavelength multiwavelength unwrapping or spectroscopy, performing super-resolution imaging synthetic aperture simultaneous acquisition, ultrafast events by temporal parallel channels laser pulses, measuring Jones matrix and birefringence hologram, fluorescent quantitative profiles together, among others. Each techniques opens new perspectives applying holography efficiently measure challenging biological metrological samples. Furthermore, even if is done digitally, useful rapid processing wavefront, compression, visualization purposes. Although these applications requires optical system processing, they all share theoretical background. We therefore review theory, various systems, field goal stimulating its further development.