Infiltrating a thin or single layer opal with an atomic vapour: sub-doppler signals and crystal optics

Abstract : Artificial thin glass opals can be infiltrated with a resonant alkali-metal vapour, providing novel types of hybrid systems. The reflection at the interface between the substrate and the opal yields a resonant signal, which exhibits sub-Doppler structures in linear spectroscopy for a range of oblique incidences. This result is suspected to originate in an effect of the three-dimensional confinement of the vapour in the opal interstices. It is here extended to a situation where the opal is limited to a few or even a single layer opal film, which is a kind of bidimensional grating. We have developed a flexible one-dimensional layered optical model, well suited for a Langmuir-Blodgett opal. Once extended to the case of a resonant infiltration, the model reproduces quick variations of the lineshape with incidence angle or polarization. Alternately, for an opal limited to a single layer of identical spheres, a three-dimensional numerical calculation was developed. It predicts crystalline anisotropy, which is demonstrated through diffraction on an empty opal made of a single-layer of polystyrene spheres.
Type de document :
Article dans une revue
EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2014, 108, pp.17008. <10.1209/0295-5075/108/17008>
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https://hal.archives-ouvertes.fr/hal-01064748
Contributeur : Daniel Bloch <>
Soumis le : mercredi 17 septembre 2014 - 10:40:37
Dernière modification le : mardi 11 octobre 2016 - 14:54:16

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Elias Moufarej, Isabelle Maurin, Ilya Zabkov, Athanasios Laliotis, Philippe Ballin, et al.. Infiltrating a thin or single layer opal with an atomic vapour: sub-doppler signals and crystal optics. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2014, 108, pp.17008. <10.1209/0295-5075/108/17008>. <hal-01064748>

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