Gaussian beams diffracting in time
arXiv:1709.08080 · doi:10.1364/OL.42.004679
Abstract
We show how to transform the mathematical expression of any monochromatic paraxial light beam into the expression of a pulsed beam whose diffraction is switched from the axial direction to its temporal structure. We exemplify this transformation with time-diffracting Gaussian beams. The conditions for the obtained diffraction-free wave to be physically meaningful are discussed.
5 pages, 4 figures