Diagrammatic Explanation of the Reverse Doppler Effect in Space-Time Modulated Photonic Crystals
classification
⚛️ physics.optics
keywords
diagrammaticdopplerphotonicaddressapproachboundedcontroversycrystal
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An inverse Doppler shift occurs in a photonic crystal (PC) bounded by a moving wall. The interpretation of this result has stirred some controversy. In this paper, we address the problem using a diagrammatic approach. This visual representation provides immediate insight into the phenomenon, and is a powerful tool for the design of time-varying PCs.
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