STABILITY OF ACTIVE PHOTONIC METASURFACE PAIRS
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Date
2021-11-26
Authors
Valagiannopoulos, Constantinos
Tretyakov, Sergei A
Journal Title
Journal ISSN
Volume Title
Publisher
New Journal of Physics
Abstract
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.
Description
Keywords
Type of access: Open Access, active media, metasurface, stability
Citation
Valagiannopoulos, C., & Tretyakov, S. A. (2021). Stability of active photonic metasurface pairs. New Journal of Physics, 23(11), 113045. https://doi.org/10.1088/1367-2630/ac37ac