Observation of genuine wave vector ( k or β ) gap in a dynamic transmission line and temporal photonic crystals

By definition, a temporal photonic crystal (TPC) has a permittivity ε(t) that varies periodically with time. We prove that, in the long wavelength limit, a TPC is accurately mimicked by a dynamic transmission line (DTL) having a capacitance (inductance) per unit length equal to ε(t) (μ). Employing a...

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Veröffentlicht in:Applied physics letters 2015-08, Vol.107 (7)
Hauptverfasser: Reyes-Ayona, J. R., Halevi, P.
Format: Artikel
Sprache:eng
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Zusammenfassung:By definition, a temporal photonic crystal (TPC) has a permittivity ε(t) that varies periodically with time. We prove that, in the long wavelength limit, a TPC is accurately mimicked by a dynamic transmission line (DTL) having a capacitance (inductance) per unit length equal to ε(t) (μ). Employing a DTL in the microwave region, we measured the photonic band structure, which results to display a genuine wave vector (k or β) gap, in very good agreement with our theoretical model and the equivalent TPC.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4928659