Nonlinear optical effects

Thermocapillary optical nonlinearity in stratified solutions

S. A. Viznyuk, A. T. Sukhodol'skiĭ


Abstract: Optical nonlinearity caused by thermocapillary separation of the components of a stratifiable solution undergoing a phase transition in an inhomogeneous (periodic) temperature field was investigated. The dynamics of the separation of the components during formation of a diffraction grating, the diffraction efficiency, and the spatial resolution were studied as a function of the experimental conditions. Saturation of the diffraction efficiency was observed and this was interpreted on the basis of the dynamics of thermocapillary transfer of disperse-phase particles in a periodic temperature field.

UDC: 535.375,532:516,621.373.826

PACS: 42.65.-k, 42.79.Dj, 65.20.+w, 47.55.dm

Received: 23.03.1990

 English version: Soviet Journal of Quantum Electronics, 1991, 21:1, 89–93

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