Stability of active photonic metasurface pairs

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 g...

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Bibliographic Details
Published inNew journal of physics Vol. 23; no. 11; pp. 113045 - 113059
Main Authors Valagiannopoulos, Constantinos, Tretyakov, Sergei A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2021
Subjects
active media
Lasers
metasurface
Metasurfaces
Photonics
Physics
Propagation
Quantum dots
stability
Stability analysis
Stealth technology
Visibility
Wave fronts
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Summary: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.
Bibliography:NJP-113979.R1
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ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ac37ac