Coherent Imaging of Quantum Solids Using a Computer-Generated Hologram
Coating and Surface Technology
Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
Final Report Abstract
Visualization of mesoscale phase textures in quantum correlated electronic solids and magnetic materials has been a driving force for development of coherent X-ray imaging methods. In particular computational imaging methods such as ptychography emerged with the improvements in the computing power and available memory to even desktop computers. Ptychography can image extended objects with a resolution that regularly surpasses the resolution of X-ray optics. However, this feat is achieved by a serial imaging modality that inevitable trades imaging speed for resolution. Diametrically opposed to this approach is the so called Fourier Transform Holography (FTH) methods which are compatible with single shot imaging methods but cannot image extended objects and the field of view is physically anchored to a predefined region of interest. The aim of this project was to develop a structured illumination based holography method that can combine the best properties of the two techniques while overcoming the downsides. To achieve that goal, we have developed the computational basis for design and synthesis of the optics, set up a visible light mockup of the X-ray experiment, fabricated the X-ray optics, and carried out the X-ray experiments at Elettra in Italy. Here, results of those experiments and difficulties encountered as well as some of the solutions to those difficulties will be discussed.
