When it comes to “phase measurement” or “quantitative phase imaging”, many people will
automatically connect them with “laser” and “interferometry”. Indeed, conventional …

Imaging techniques based on neutron beams are rapidly developing and have become
versatile non-destructive analyzing tools in many research fields. Due to their intrinsic …

Schlieren and shadowgraph techniques are basic and valuable tools in various scientific
and engineering disciplines. They allow us to see the invisible: the optical inhomogeneities …

We demonstrate simultaneous phase and amplitude extraction from a single defocused
image of a homogeneous object. Subject to the assumptions explicitly stated in the …

The well-known transport of intensity equation (TIE) allows the phase of a coherent field to
be retrieved non-interferometrically given positive defined intensity measurements and …

The transport-of-intensity equation (TIE) is one of the most well-known approaches for phase
retrieval and quantitative phase imaging. It directly recovers the quantitative phase …

Understanding the structure of defects in crystalline materials is essential for modern
materials science. While most defect characterization involves the inverse and non-unique …

We develop and compare three different methods of phase retrieval from series of image
measurements obtained at different defocus values. The first approach is an approximate …

X-ray sources are developing rapidly and their coherent output is growing correspondingly.
The increased coherent flux from modern X-ray sources is being matched with an …

Neutron imaging can provide two-or three-dimensional, spatially resolved images of the
internal structure of bulk samples that are not accessible by other techniques, making it a …