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Article Dans Une Revue Journal of Low Temperature Physics Année : 2021

Stimulated Brillouin Gain Spectroscopy of Superfluid Helium-4

Résumé

We report Stimulated Brillouin gain spectra of bulk superfluid helium-4. Stimulated Brillouin gain spectroscopy is a powerful optical method to probe the acoustic properties of liquid helium in a narrow spatio-temporal domain with moderate optical power and fast acquisition rates. We determine the velocity of first sound of superfluid helium-4 from the Stimulated Brillouin gain spectra between 0.90 K and 2.17 K and compare it to well known available data, which validate our experimental method.
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Dates et versions

hal-04004351 , version 1 (24-02-2023)

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Lionel Djadaojee, Albane Douillet, Jules Grucker. Stimulated Brillouin Gain Spectroscopy of Superfluid Helium-4. Journal of Low Temperature Physics, 2021, 203 (1-2), pp.234-243. ⟨10.1007/s10909-021-02584-w⟩. ⟨hal-04004351⟩
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