Nonreciprocal Electromagnetic Scattering from a Periodically Space-Time Modulated Slab and Application to a Quasisonic Isolator
arXiv:1705.06311 · doi:10.1103/PhysRevB.96.165144
Abstract
Scattering of obliquely incident electromagnetic waves from periodically space-time modulated slabs is investigated. It is shown that such structures operate as nonreciprocal harmonic generators and spatial-frequency filters. For oblique incidences, low-frequency harmonics are filtered out in the form of surface waves, while high-frequency harmonics are transmitted as space waves. In the quasisonic regime, where the velocity of the space-time modulation is close to the velocity of the electromagnetic waves in the background medium, the incident wave is strongly coupled to space-time harmonics in the forward direction, while in the backward direction it exhibits low coupling to other harmonics. This nonreciprocity is leveraged for the realization of an electromagnetic isolator in the quasisonic regime and is experimentally demonstrated at microwave frequencies.
References in corpus (4)
Cited by in corpus (53)
- What is Nonreciprocity?
- Photonics of Time-Varying Media
- Phase-Induced Frequency Conversion and Doppler Effect with Time-Modulated Metasurfaces
- Tailoring Structure-borne Sound Through Bandgap Engineering in Phononic Crystals and Metamaterials: A Comprehensive Review
- Serrodyne frequency translation using time-modulated metasurfaces
- Broadband Nonreciprocal Amplification in Luminal Metamaterials
- Beyond the Bode-Fano Bound: Wideband Impedance Matching for Short-Pulses using Temporal Switching of Transmission-Line Parameters
- Generalized Space-Time Periodic Diffraction Gratings: Theory and Applications
- Full-Duplex Nonreciprocal-Beam-Steering Metasurfaces Comprising Time-Modulated Twin Meta-Atoms
- Theory and Design of Multifunctional Space-Time Metasurfaces
- Homogenisation Theory of Space-Time Metamaterials
- Full-duplex Reflective Beamsteering Metasurface Featuring Magnetless Nonreciprocal Amplification
- Asymmetric frequency conversion with acoustic non-Hermitian space-time varying metamaterial
- Space-Time Modulated Metasurfaces with Spatial Discretization: Free-Space N-path Systems
- Photonic Floquet media with a complex time-periodic permittivity
- Simultaneous Control of the Spatial and Temporal Spectra of Light with Space-Time Varying Metasurfaces
- Electrically Tunable Harmonics in Time-modulated Metasurfaces for Wavefront Engineering
- Arbitrary manipulations of dual harmonics and their wave behaviors based on space-time-coding digital metasurface
- Temporal Switching to Extend the Bandwidth of Thin Absorbers
- Pure and Linear Frequency Converter Temporal Metasurface
- Dynamic Modulation Yields One-Way Beam Splitting
- Nonreciprocal Phased-Array Antennas
- Floquet Analysis of Space-Time Modulated Huygens' Metasurfaces with Lorentz Dispersion
- Space-Time Medium Functions as a Perfect Antenna-Mixer-Amplifier Transceiver
- Wave Deflection and Shifted Refocusing in a Medium Modulated by a Superluminal Rectangular Pulse
- Time-varying components for enhancing wireless transfer of power and information
- Soft Temporal Switching of TL Parameters: Wave-field, Energy Balance, Applications
- New Electromagnetic Modes in Space-Time Modulated Dispersion-Engineered Media
- Space-Time Phononic Crystals with Anomalous Topological Edge States
- Unidirectional scattering with spatial homogeneity using photonic time disorder
- Unidirectional Loop Metamaterials (ULM) as Magnetless Artificial Ferrimagnetic Materials: Principles and Applications
- Temporal Rainbow Scattering at Boundary-Induced Time Interfaces
- Non-reciprocity using quadrature-phase time-varying slab resonators
- Four-Dimensional Wave Transformations By Space-Time Metasurfaces
- Rotating Spacetime Modulation: Topological Phases and Spacetime Haldane Model
- Homogenization of Dispersive Spacetime Crystals: Anomalous Dispersion and Negative Stored Energy
- Integrated Conductivity-Modulation-Based RF Magnetic-Free Non-Reciprocal Components: Recent Results and Benchmarking
- Optimization-free Approach for Analog Filter Design through Spatial and Temporal Soft Switching of the Dielectric Constant
- Space-time Metallic Metasurfaces for Frequency Conversion and Beamforming
- Dipole polarizability of time-varying particles
- Electromagnetic fields in a time-varying medium: Exceptional points and operator symmetries
- Electron Scattering at a Potential Temporal Step Discontinuity
- One-dimensional time-Floquet photonic crystal
- Fundamental asymmetries between spatial and temporal boundaries in electromagnetics
- Interaction between linear polarized plane gravitational waves and a plane electromagnetic wave in the electromagnetic-gravity analogue
- Spatiotemporal coupled-mode equations for arbitrary pulse transformation
- An Energy Conserving Mechanism for Temporal Metasurfaces
- Efficient Computation of Spatially-Discrete Traveling-Wave Modulated Structures
- Spacetime Metamaterials
- Nonreciprocal-Beam Phased-Array Antennas
- A new mechanism for gain in time dependent media
- Resonant states of structured photonic time crystals
- Highly Linear Nonmagnetic Circulator Enabled By A Temporal Nonreciprocal Phase Shifter