In this paper, a wavefront curvature sensor is presented. This sensor is based on the measurements of the differentials of wavefront slopes, where the wavefront slope measurements can be achieved by a Shack-Hartmann sensor. A ShackHartmann sensor with three output collimated beams will be introduced with a lenslet array installed in each beam. By shifting two of the Shack-Hartmann grids in the ...

We present an algorithm to extend significantly the dynamic range of a Shack-Hartmann wavefront sensor. With this method, the recorded Shack-Hartmann spots are not constrained to stay in the field of view of their lenslet. The proposed algorithm is computationally effective, robust to a high level of noise on the measured centroid positions and also to missing centroid values. The principle is ...

The hybrid model for analyzing distortions of a laser beam passed through moderately scattering medium with the number events up to 10 is developed and investigated. implemented Monte Carlo technique simulate propagation layer, ray-tracing propagate scattered measurements plane, Shack–Hartmann calculate distortions. results obtained from were confirmed during laboratory experiment. Both numeric...

Now in use on x-ray beamlines worldwide, shearing interferometry and Hartmann wavefront sensing provide effective feedback for measuring optimizing high-quality beams. Conventionally, both approaches spatially modulate the beam properties (amplitude or phase) using two-tone, binary patterns, leading to deleterious diffraction effects that must be mitigated. In shearing, presence of multiple ord...

Zur Verortung der explorativen Empiriephase und ihrer Ergebnisse innerhalb des Projektes „Entwicklung von Gestaltungsanforderungen bei vernetzten Systemen“ soll der Projektverlauf kurz skizziert werden. Zur Vorbereitung diente zunächst eine ausführliche Analyse der Literatur zu vernetzten Systemen. Dazu zählten Beschreibungen im Betrieb befindlicher Systeme, Literatur zu aktuellen und potentiel...