Energy Backflow in Unidirectional Monochromatic and Space–Time Waves

Backflow, or retropropagation, is a counterintuitive phenomenon whereby for a forward-propagating wave the energy locally propagates backward. In the context of backflow, physically most interesting are the so-called unidirectional waves, which contain only forward-propagating plane wave constituent...

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Bibliographic Details
Main Authors: Peeter Saari, Ioannis M. Besieris
Format: Article
Language:English
Published: MDPI AG 2024-11-01
Series:Photonics
Subjects:
Online Access:https://www.mdpi.com/2304-6732/11/12/1129
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