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Strong coupling in polaritonic systems: towards enhancing IR sensing (Conference Presentation)
Author(s): Joshua D. Caldwell
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Paper Abstract

Polaritons offer us the potential for strong light-matter interactions and nanoscale manipulation and confinement of light, by coupling light with oscillating free-charge carriers. A wide variety of optical phenomena result from such polaritonic media and these serve as a basic building block for most approaches towards infrared nanophotonic and metamaterial approaches. Recently, the strong interactions between oscillators of various types with polaritonic resonances and/or propagating modes have been reported in the context of enhanced molecular sensing and tailored absorber designs. Here I will discuss polaritonic strong coupling utilizing epsilon-near-zero and polaritonic thin films, demonstrating the potential to achieve ultrastrong coupling between these modes. These results will be discussed in the context of both surface plasmon and surface phonon polaritons, and the implications of the coupling effects and means to control the strength of the coupling also reported. Additionally, the such strong coupling between molecular absorbers and surface phonon polariton systems will be discussed, with discussions of how the strength of the vibrational-polariton coupling influences enhanced spectroscopy provided.

Paper Details

Date Published: 4 March 2019
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Proc. SPIE 10922, Smart Photonic and Optoelectronic Integrated Circuits XXI, 109220H (4 March 2019); doi: 10.1117/12.2511370
Show Author Affiliations
Joshua D. Caldwell, Vanderbilt Univ. (United States)


Published in SPIE Proceedings Vol. 10922:
Smart Photonic and Optoelectronic Integrated Circuits XXI
Sailing He; El-Hang Lee, Editor(s)

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