Optomechanics in superfluid helium coupled to a fiber-based cavity

Presented in this paper are measurements of an optomechanical device in which various acoustic modes of a sample of superfluid helium couple to a fiber-based optical cavity. In contrast with recent work on the paraxial acoustic mode confined by the cavity mirrors (Kashkanova et al Nat. Phys. 2016 (h...

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Bibliographic Details
Published in:Journal of optics (2010) 2017-03, Vol.19 (3), p.34001
Main Authors: Kashkanova, A D, Shkarin, A B, Brown, C D, Flowers-Jacobs, N E, Childress, L, Hoch, S W, Hohmann, L, Ott, K, Reichel, J, Harris, J G E
Format: Article
Language:English
Subjects:
fluid mechanics
liquid helium
optical cavities
optomechanics
superfluid
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Summary:Presented in this paper are measurements of an optomechanical device in which various acoustic modes of a sample of superfluid helium couple to a fiber-based optical cavity. In contrast with recent work on the paraxial acoustic mode confined by the cavity mirrors (Kashkanova et al Nat. Phys. 2016 (https://doi.org/10.1038/NPHYS3900)), we focus specifically on the acoustic modes associated with the helium surrounding the cavity. This paper provides a framework for understanding how the acoustic modes depend on device geometry. The acoustic modes are observed using the technique of optomechanically induced transparency/amplification. The optomechanical coupling to these modes is found to be predominantly photothermal.
ISSN:2040-8978
2040-8986
DOI:10.1088/2040-8986/aa551e