Simple analytic expressions of Fresnel diffraction patterns at a straight strip and slit for Gaussian wave illumination

Abstract

Diffraction of light on an opaque thin strip and a slit is considered, providing simple analytic formulas describing Fresnel diffraction patterns for Gaussian-beam illumination. The presented equations provide a simple way to carry out diffraction simulations. Evolution of the intensity distribution of a scattered wave through a rectilinear strip from the near to far field is also shown.

Temporal Fresnel diffraction induced by phase jumps in linear and nonlinear optical fibres

“…First, the initial wave is not restricted to a continuous fully coherent wave. Similarly to the spatial case, we can indeed consider the impact of a temporal phase shift imprinted on an initial pulse [23,61,62], on a wave that has an initial chirp [63,64] or a wave that is only partially coherent [3]. With the progress of coherent transmissions, it is also possible to combine intensity and phase modulation, therefore mimicking a partially transparent phase object [22,48,65].…”