Focusing inside Disordered Media with the Generalized Wigner-Smith Operator.
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DOI: 10.1103/physrevlett.119.033903
Abstract: We introduce a wave front shaping protocol for focusing inside disordered media based on a generalization of the established Wigner-Smith time-delay operator. The key ingredient for our approach is the scattering (or transmission) matrix of… read more here.
Keywords: media generalized; focusing inside; disordered media; inside disordered ... See more keywords
Wigner–Smith Time-Delay Matrix for Electromagnetics: Guiding and Periodic Systems With Evanescent Modes
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DOI: 10.1109/tap.2023.3249629
Abstract: The Wigner–Smith (WS) time-delay matrix relates an electromagnetic system’s scattering matrix and its frequency derivative. Previous work showed that the entries of WS time-delay matrices of systems excited by propagating waves consist of volume integrals… read more here.
Keywords: time; time delay; smith time; delay matrix ... See more keywords