Nonlinear excitation of temperature waves in He 3 – He 4 superfluid solutions due to absorption of light waves

The nonlinear excitation of temperature waves in superfluid solutions of He 3 in He 4 through the absorption of optical waves is considered. A nonlinear equation which describes such an interaction is derived, an expression for the nonlinear interaction length is obtained, and the necessary value of...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2007-10, Vol.33 (10), p.811-813
Main Author: Pushkina, N. I.
Format: Article
Language:English
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Summary:The nonlinear excitation of temperature waves in superfluid solutions of He 3 in He 4 through the absorption of optical waves is considered. A nonlinear equation which describes such an interaction is derived, an expression for the nonlinear interaction length is obtained, and the necessary value of the interaction length for which second sound excited by two light waves can be amplified from fluctuations to observable values is estimated in order of magnitude.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.2746849