Porras Miguel A
Opt Lett. 2017 Nov 15;42(22):4679-4682. doi: 10.1364/OL.42.004679.
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.
我们展示了如何将任何单色傍轴光束的数学表达式转换为脉冲光束的表达式，其衍射从轴向转换为时间结构。我们以时间衍射高斯光束为例来说明这种转换。讨论了所得到的无衍射波具有物理意义的条件。
