Reactive energy in non-diffracting localized waves
arXiv:1911.01070 · doi:10.1103/PhysRevA.101.023812
Abstract
It is well known that although the group velocity of structured light pulses propagating in vacuum can be subluminal or superluminal, the upper limit of the energy flow velocity is c, the speed of light in vacuum. This inequality can be explained in terms of the reactive energy left behind by the fields. Energy and reactive energy densities have been calculated for vector-valued two-dimensional (light sheet) superluminal electromagnetic nondiffractive pulses, as well as scalar-valued and TM three-dimensional superluminal and subluminal spatiotemporally localized electromagnetic waves. Emphasis is placed on the physical formation of the reactive energy due to interference of the plane-wave constituents of the structured light waves.
10 pages, 7 figures
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Cited by in corpus (5)
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- Free-space optical delay line using space-time wave packets
- Backward energy flow in simple 4-wave electromagnetic fields
- Refraction of space-time wave packets: I. Theoretical principles
- Mean propagation velocity of multiphoton wave-packet states with nonzero Lorentz-invariant mass