X-ray Coherent diffraction interpreted through the fractional Fourier   transform
  Diffraction of coherent x-ray beams is treated through the Fractionnal Fourier transform. The transformation allow us to deal with coherent diffraction experiments from the Fresnel to the Fraunhofer regime. The analogy with the Huygens-Fresnel theory is first discussed and a generalized uncertainty principle is introduced. 
David Le Bolloc'h and Jean-Francois Sadoc
cond-mat.other physics.optics