Diagrammatic Explanation of the Reverse Doppler Effect in Space-Time Modulated Photonic Crystals
arXiv:1602.06552
Abstract
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.
Submitted to 2016 AP-S Symposium. 2 pages, 2 figures