Study of exciton-polariton modes in nanocrystalline thin films of CuCl using reflectance spectroscopy

Foy, Barry; McGlynn, Enda; Cowley, Aidan; McNally, Patrick J.; Henry, M.O.

doi:10.1063/1.4739726

Cited by 6 publications

(1 citation statement)

References 20 publications

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“…Such excitonradiation-coupling beyond the LWA strongly modifies the optical spectra relative to those expected from bare excitonic systems, and the interpretation of the spectral shape becomes complex. Although numerous studies have been performed on the excitonic properties in the thin film geometry [11][12][13][14][15][16][17] , efforts to exploit the potential of light-matter coupling beyond the LWA regime have only just begun, and the unresolved physics and potential applications of excitons in promising materials offer scope for further research.…”

Section: Introductionmentioning

confidence: 99%

Design of nonlinear optical response of multipole-type excitons by film thickness and incident pulse width

Kinoshita

Ishihara

2017

Phys. Rev. B

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We theoretically investigate the nonlinear optical pulse responses of excitons in a thin film where the excitonic center-of-mass motion is confined. A large interaction volume between excitons and radiation yields particular coupled states with radiative decay times reaching several femto-seconds. By considering two polarization directions of light, we reveal that these fast-decay modes dominantly survive in an optical Kerr spectra even under a massive nonradiative damping Γ = 30 meV. The results clearly show that there is an optimal combination of the incident pulse width and the film thickness for maximizing the integrated intensity of nonlinear signals.

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