Abstract
In Chap. 5, the effects of dipole–dipole interactions were explored, leading to the saturating behaviour of the electric susceptibility at high density. Experimentally this was demonstrated via a saturation in the optical depth of the ensemble. However, this only probes the imaginary component of the susceptibility. In this chapter we investigate the real part of the susceptibility, responsible for the refractive properties of the medium.
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Notes
- 1.
For air, the index change at optical frequencies \(n-1 \approx 3 \times 10^{-4}\) [8].
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Keaveney, J. (2014). Giant Refractive Index. In: Collective Atom–Light Interactions in Dense Atomic Vapours. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-07100-8_6
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