Transfer matrix method for the analysis of space-time modulated media and systems
arXiv:1905.10658 · doi:10.1103/PhysRevB.100.144311
Abstract
Space-time modulation adds another powerful degree of freedom to the manipulation of classical wave systems. It opens the door for complex control of wave behavior beyond the reach of stationary systems, such as nonreciprocal wave transport and realization of gain media. Here we generalize the transfer matrix method and use it to create a general framework to solve wave propagation problems in time-varying acoustic, electromagnetic, and electric circuit systems. The proposed method provides a versatile approach for the study of general space-time varying systems, which allows any number of time-modulated elements with arbitrary modulation profile, facilities the investigation of high order modes, and provides an interface between space-time modulated systems and other systems.
arXiv comment13 pages, 7 figures
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- Short-Pulsed Metamaterials
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- A multiple scattering formulation for elastic wave propagation in space-time modulated metamaterials
- One-dimensional time-Floquet photonic crystal
- Band-gap tuning in 2D spatiotemporal phononic crystals