This book examines two-dimensional light fields (sinc-beams, Airy beams, Hankel beams, and Bessel beams with fractional order), in which the reverse energy flow is formed near isolated intensity nulls. That is, near those points where the energy (power) density is zero. A reverse canonical energy flow has also been found in three-dimensional nonparaxial vector light fields with linear, azimuthal, and hybrid polarizations. The reverse energy flow is formed in the near field, in the presence...