39 citations · 104 across the 6 of their papers we have counts for
6 papers
Single-shot imaging with randomized structured illumination at a free electron laser
Abraham L. Levitan, Kahraman Keskinbora, Matteo Pancaldi +4
Stroboscopic nanoscale imaging with free electron laser light is revolutionizing our understanding of fast dynamics in heterogeneous systems. The short wavelength of X-ray and extr…
Mode purity and structural analysis of x-ray vortices generated by spiral zone plates
M. Baluktsian, L. Loetgering, G. Dogan +6
In the visible spectrum vortex beams have found various applications, ranging from optical tweezers to super-resolution imaging. Recently, these beams have been demonstrated using…
Maskless off-axis X-ray Holography
Kahraman Keskinbora, Abraham Levitan, Gisela Schütz +1
Off-axis X-ray holography is a lensless imaging technique that allows unambiguous retrieval of an object's exit-wave function with high fidelity. It has been used with great succes…
Single-frame far-field diffractive imaging with randomized illumination
Abraham L. Levitan, Kahraman Keskinbora, Umut T. Sanli +2
We introduce a single-frame diffractive imaging method called randomized probe imaging (RPI). In RPI, a sample is illuminated by a structured probe field containing speckles smalle…
X-Ray Microscopy of Spin Wave Focusing using a Fresnel Zone Plate
Joachim Gräfe, Martin Decker, Kahraman Keskinbora +6
Magnonics, i.e. the artificial manipulation of spin waves, is a flourishing field of research with many potential uses in data processing within reach. Apart from the technological…
Ion beam lithography for Fresnel zone plates in X-ray microscopy
Kahraman Keskinbora, Corinne Grévent, Michael Bechtel +10
Fresnel Zone Plates (FZP) are to date very successful focusing optics for X-rays. Established methods of fabrication are rather complex and based on electron beam lithography (EBL)…