Coded aperture correlation holographic microscope for single-shot quantitative phase and amplitude imaging with extended field of view

Abstract

Recently, a method of recording holograms of coherently illuminated threedimensional scene without two-wave interference was demonstrated. The method is an extension of the coded aperture correlation holography from incoherent to coherent illumination. Although this method is practical for some tasks, it is not capable of imaging phase objects, a capability that is an important benefit of coherent holography. The present work addresses this limitation by using the same type of coded phase masks in a modified Mach-Zehnder interferometer. We show that by several comparative parameters, the coded aperturebased phase imaging is superior to the equivalent open aperture-based method. As an additional merit of the coded aperture approach, a framework for increasing the system's field of view is formulated and demonstrated for both amplitude and phase objects. The combination of high sensitivity quantitative phase microscope with increased field of view in a single camera shot holographic apparatus, has immense potential to serve as the preferred tool for examination of biological tissues and micro-organisms.

Spatio‐Spectral‐Temporal Imaging of Fast Transient Phenomena Using a Random Array of Pinholes

“…[ 45,46 ] The field of view can be further increased by spatial multiplexing methods. [ 47,48 ] We believe that the demonstrated idea will lead to a new generation of fast transient 3D color imaging tools useful in understanding fast transient phenomena better. The method may not be suitable for low light imaging due to the lossy pinhole array.…”

Roadmap on Digital Holography-Based Quantitative Phase Imaging

“…This powerful tool enables 3D non-destructive imaging, with nanoscale sensitivity, and label-free reconstruction of the morphology of phase objects that are otherwise invisible. Recording the phase information is usually done using interference between a wave that interacts with the sample and a reference wave that does not carry any sample information [69,70]. In this section, we describe the combination between the concept of self-reference on-axis holography and QPI.…”

Lensless Three-Dimensional Quantitative Phase Imaging Using Phase Retrieval Algorithm

“…The technique can also be integrated into polariscopy for orientation measurements [ 48 ]. We believe that the tutorial will be useful for beginners and young scientists who would like to begin research in the area of QPI and follow the latest developments in the area [ 49 , 50 ]. Furthermore, the low-cost and easy to implement conditions will encourage academic research activities on QPI in developing countries.…”