Subwavelength epsilon-near-zero (ENZ) films with decorated nanoantennae are an emerging platform for coupling radiation into the ENZ mode: recent experiments have shown how strong coupling between the two systems underpins significant nonlinear effects. Field enhancement and the temporal dynamic of the radiation in ENZ films strongly coupled with plasmonic antennae play a substantial role in the light–matter interaction, and the latter has not yet been fully disclosed. We numerically investigate the pulse shaping of radiation impinging on two representative strongly coupled systems: a transparent conductive oxide with ENZ in the NIR band (ITO) and a polar material with ENZ in the MIR (SiC). In both cases, we demonstrate that the temporal dynamics and field enhancement are particularly pronounced within the strong coupling region, and we highlight the different polarization responses of the ITO-based case from the SiC one. The latter, owing to lower losses, shows extreme reshaping of resonant radiation close to the ENZ spectral region and is, therefore, a promising candidate for slow-light-enhanced effects.
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Temporal dynamics of strongly coupled epsilon near-zero plasmonic systems
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29 November 2021
Research Article|
November 29 2021
Temporal dynamics of strongly coupled epsilon near-zero plasmonic systems
Special Collection:
Zero-index Metamaterials for Classical and Quantum Light
Mehdi H. Ebrahim;
Mehdi H. Ebrahim
1
James Watt School of Engineering, University of Glasgow
, G12 8QQ Glasgow, United Kingdom
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Andrea Marini;
Andrea Marini
2
Department of Physical and Chemical Sciences, University of L'Aquila
, Via Vetoio, 67100 L'Aquila, Italy
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Vincenzo Bruno;
Vincenzo Bruno
3
School of Physics and Astronomy, University of Glasgow
, G12 8QQ Glasgow, United Kingdom
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Nathaniel Kinsey
;
Nathaniel Kinsey
4
Department of Electrical and Computer Engineering, Virginia Commonwealth University
, Richmond, Virginia 23284, USA
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Jacob B. Khurgin
;
Jacob B. Khurgin
5
Department of Electrical and Computer Engineering, Johns Hopkins University
, Baltimore, Maryland 21218, USA
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Daniele Faccio
;
Daniele Faccio
3
School of Physics and Astronomy, University of Glasgow
, G12 8QQ Glasgow, United Kingdom
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Matteo Clerici
Matteo Clerici
a)
1
James Watt School of Engineering, University of Glasgow
, G12 8QQ Glasgow, United Kingdom
a)Author to whom correspondence should be addressed: matteo.clerici@glasgow.ac.uk
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a)Author to whom correspondence should be addressed: matteo.clerici@glasgow.ac.uk
Note: This paper is part of the APL Special Collection on Zero-index Metamaterials for Classical and Quantum Light.
Appl. Phys. Lett. 119, 221101 (2021)
Article history
Received:
September 05 2021
Accepted:
October 18 2021
Citation
Mehdi H. Ebrahim, Andrea Marini, Vincenzo Bruno, Nathaniel Kinsey, Jacob B. Khurgin, Daniele Faccio, Matteo Clerici; Temporal dynamics of strongly coupled epsilon near-zero plasmonic systems. Appl. Phys. Lett. 29 November 2021; 119 (22): 221101. https://doi.org/10.1063/5.0070296
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