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11 June 2024 Modification of micro- and macroproperties of plasmon-molecule systems by strong coupling
Tomasz J. Antosiewicz, Maria Bancerek, Katarzyna Kluczyk-Korch
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Proceedings Volume PC12991, Nanophotonics X; PC129911C (2024) https://doi.org/10.1117/12.3022079
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
Plasmonic-molecular systems are gaining interest as a platform to studying strong light-matter coupling effects, owing to small mode volumes of plasmonic modes and relatively small systems sizes (hundreds of atoms) enabling tackling them by the ab initio methods. In our work we use real-time TD-DFT method to study what modifications of the systems occur under strong coupling conditions, including plasmon redshift and molecular absorption quenching. We observe mixed transitions, i.e. ocurring when the initial and excited states are located in different subparts of the system, as well as the drastic modifications of the molecular oscillator when modeling the systems with the coupled oscillators model. We show how atomistic scale effects influence the coupling and how to tailor the polaritonic states to obtain desired features in the system.
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Tomasz J. Antosiewicz, Maria Bancerek, and Katarzyna Kluczyk-Korch "Modification of micro- and macroproperties of plasmon-molecule systems by strong coupling", Proc. SPIE PC12991, Nanophotonics X, PC129911C (11 June 2024); https://doi.org/10.1117/12.3022079
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KEYWORDS
Nanoparticles
Absorption
Electric fields
Localized surface plasmon resonances
Molecules
Oscillators
Plasmonics
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