Scanning Diffracted-Light images

A 4-f imaging arrangement of lenses with a camera, and a rotating slit placed at the Fourier plane of the system, was used to obtain the optical disturbance produced by a macroscopic sample. The sample was illuminated by collimated beams from white-light and thermal radiation sources. The agreement between simulated and experimental results, obtained by processing the captured images using a Fourier ptychographic algorithm, demonstrates that scanning with the slit, the direction of the light that is diffracted by the sample, permits achieving the image diversity necessary for the successful implementation of the scanning diffracted-light imaging technique.