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arXiv · 1611.01366

Wave Deflection and Shifted Refocusing in a Medium Modulated by a Superluminal Rectangular Pulse

Zoé-Lise Deck-Léger·Alireza Akbarzadeh·Christophe Caloz
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Abstract

We explore the problem of scattering in a medium modulated by a superluminal rectangular pulse, with the pulse modulation realized through transverse excitations. We solve this problem in the moving frame where the modulation appears purely temporal, since the solution to a purely temporal modulation is known. Upon this basis, we use a graphical approach to find the angle and frequency of the wave scattered by the modulation under oblique incidence. This study reveals that superluminal modulations deflect plane waves retro-directively, and refocus cylindrical waves to a shifted point of space with respect to the original source.

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Zoé-Lise Deck-Léger, Alireza Akbarzadeh, Christophe Caloz. 2018-01-26. Wave Deflection and Shifted Refocusing in a Medium Modulated by a Superluminal Rectangular Pulse. https://doi.org/10.1103/physrevb.97.104305

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