Document Type
Article
Publication Date
2022
Abstract
Time-varying media have recently emerged as a new paradigm for wave manipulation, due to the synergy between the discovery of highly nonlinear materials, such as epsilon-near-zero materials, and the quest for wave applications, such as magnet-free nonreciprocity, multimode light shaping, and ultrafast switching. In this review, we provide a comprehensive discussion of the recent progress achieved with photonic metamaterials whose properties stem from their modulation in time. We review the basic concepts underpinning temporal switching and its relation with spatial scattering and deploy the resulting insight to review photonic time-crystals and their emergent research avenues, such as topological and non-Hermitian physics. We then extend our discussion to account for spatiotemporal modulation and its applications to nonreciprocity, synthetic motion, giant anisotropy, amplification, and many other effects. Finally, we conclude with a review of the most attractive experimental avenues recently demonstrated and provide a few perspectives on emerging trends for future implementations of time-modulation in photonics.
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Atomic, Molecular and Optical Physics Commons, Condensed Matter Physics Commons, Electromagnetics and Photonics Commons, Engineering Physics Commons, Quantum Physics Commons
Comments
This article was originally published in Advanced Photonics, available at https://doi.org/10.1117/1.AP.4.1.014002
This work is distributed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).