Stability of active photonic metasurface pairs
Valagiannopoulos C. Tretyakov S.A.
November 2021IOP Publishing Ltd
New Journal of Physics
2021#23Issue 11
Adding active components to a photonic device may dramatically enrich and improve its performance but, at the same time, creates the risk of instability, namely, occurrence of unwanted self-oscillations. Stability considerations are not always given the attention they deserve when setups employing gain media are investigated; thus, the desired effects or reported regimes may not be achievable. In this work, a generic electromagnetic configuration comprising a pair of planar impedance metasurfaces is examined and analytical stability conditions for its operation are derived. The obtained results for the analyzed basic module can shed light on the stability conditions of more complex active systems that incorporate such components and serve a broad range of applications from imaging and polarization engineering to invisibility cloaking and wavefront transformations.
active media , metasurface , stability
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Department of Physics, Nazarbayev University, Nur-Sultan, KZ-010000, Kazakhstan
Department of Electronics and Nanoengineering, Aalto University, FI-00076, Finland
Department of Physics
Department of Electronics and Nanoengineering
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026