The Fresnel diffraction model acts as the constraint for the training process. It is capable of high-fidelity 4K hologram generation without transfer learning. In general, ...

Fresnel diffraction. Fraunhofer diffraction. Details Equipment [1] Variable rectangular aperture [1] Laser with beam expander [1] Optical rail [1] Slide mount [1] Saddle [2] Lab jack [1] Extension ...

Sharper imaging using X-rays Date: June 23, 2014 Source: Helmholtz-Zentrum Berlin für Materialien und Energie Summary: Physicists have developed a process to generate improved lenses for X-ray ...