Relevance of Rabi splitting effect for tunable enhancement of Raman scattering in self-assembled silver – Fullerene nanocomposite films

Lavrentiev, V.; Pokorný, Jan; Chvostová, D.; Klementová, Mariana; Lavrentieva, Inna; Vacı́k, J.; Dejneka, A.

doi:10.1016/j.carbon.2022.06.002

Cited by 2 publications

(1 citation statement)

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“…phenomena and further applications [1,2]. When the energy exchange rate of the emitters and the optical mode exceeds the respective damping rate, the light-matter interaction would be driven into the strong coupling regime characterized by a remarkable Rabi splitting [3,4]. A half-light and halfmatter bosonic quasiparticle state is formed, termed excitonpolariton.…”

Section: Introductionmentioning

confidence: 99%

Tunable strong plasmon–exciton coupling based modulator employing borophene and deep subwavelength perovskite grating

Yan

Lin

Wang

et al. 2023

J. Phys. D: Appl. Phys.

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Two-dimensional materials support deeply confined and tunable plasmonic modes, which have great potential for achieving device miniaturization and flexible manipulation. In this paper, we propose a diffraction-unlimited system (period ≈ λ/20) composed of borophene layer and perovskite grating to investigate the strong coupling between the borophene guiding plasmon (BGP) and perovskite exciton (PE) mode. The resonant energy of BGP mode could be electrically tuned to match the energy of PE mode, and a remarkable Rabi splitting is attained under zero-detuning condition. The splitting energy could reach 230 meV due to the strong field enhancement provided by BGP mode. Taking advantage of the proposed electrically tunable hybrid system, not only the reflective amplitude modulation depth is up to 99.9%, but the 1.76π phase range modulation is achieved. Furthermore, by increasing the distance between the borophene layer and perovskite grating, a parity-time symmetry breaking could be observed with the vanished energy splitting. Our results deepen the understanding of light-matter interaction at the sub-wavelength scale and provide a guideline for designing active plasmonic devices.

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