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. 2019 Mar 13;6(3):181605. doi: 10.1098/rsos.181605

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© 2019 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 12. — Microcavity exciton polaritons based on aligned semiconducting SWCNTs. (a) The two angles that are continuously scanned in the present experiments—the incident angle θ and the polarization angle ϕ. The latter is the angle between the SWCNT alignment direction (x-axis) and the incident light polarization direction. (b) Anisotropic dispersions of microcavity exciton-polaritons in the E₁₁ region for ϕ = 0° and ϕ = 90°. A clear VRS is observed at ϕ = 0°, while a photon dispersion with no splitting is observed at ϕ = 90°. (c) Corresponding simulated anisotropic dispersions in the E₁₁ region. (d) Experimental transmittance spectra at zero detuning (θ ∼39°) for various polarization angles ϕ from 0° to 90° for a device working in the E₁₁ region using an aligned (6,5) SWCNT film with d = 8 nm. (e) Dispersion surfaces of the upper polariton (UP) and lower polariton (LP) (coloured surfaces) for the device in (d). (f) VRS at ϕ = 0° versus the square root of the film thickness, demonstrating the $\sqrt{N}$ -fold enhancement of collective light-matter coupling. Adapted from [109].