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Diffusion multiple coherente avec atomes froids de strontium: Effet de la saturation sur la retrodiffusion coherente - Piege magneto-optique sur raie etroite

Abstract : In this thesis we have used a cloud of atomic strontium cooled on the 1S0 !1P1
transition at 461nm in order to study the effects of coherent multiple scattering
as a function of saturation. We have observed a clear decrease of the enhancement
factor of the coherent backscattering cone as a function of saturation.
We have then studied in detail the Doppler cooling in a 1d configuration on
this blue transition. It allowed us to highlight a supplementary diffusion phenomenon
for the momentum. It's due to local intensity imbalance within the beam
profil.
The cloud have been finally transfered significantly to a magneto-optical trap
on the 1S0 !3P1 intercombinaison line at 689nm . The goal is to increase the
spatial density to observe the effects of photon localisation in this new regime.
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https://tel.archives-ouvertes.fr/tel-00007793
Contributor : Thierry Chaneliere <>
Submitted on : Thursday, December 16, 2004 - 5:17:49 PM
Last modification on : Sunday, November 15, 2020 - 6:54:04 PM
Long-term archiving on: : Friday, April 2, 2010 - 8:45:19 PM

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  • HAL Id : tel-00007793, version 1

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Thierry Chaneliere. Diffusion multiple coherente avec atomes froids de strontium: Effet de la saturation sur la retrodiffusion coherente - Piege magneto-optique sur raie etroite. Physique Atomique [physics.atom-ph]. Université Nice Sophia Antipolis, 2004. Français. ⟨tel-00007793⟩

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