Nonlinear optical susceptibility measurements of solutions using third-harmonic generation on the interface

Shcheslavskiy, Vladislav; Petrov, Georgi; Yakovlev, Vladislav V.
June 2003
Applied Physics Letters;6/2/2003, Vol. 82 Issue 22, p3982
Academic Journal
By simultaneous measurements of the third-harmonic intensity on two interfaces, it is possible to make precise and fast measurements of the third-order nonlinear optical susceptibility of solutions. We propose a simple nonlinear optical technique that eliminates the effects of both scattering and absorption, thus allowing for characterization of colloidal solutions with possible aggregation. The proposed technique is experimentally demonstrated for a variety of solutions, both transparent and scattering, and shows very good agreement with data obtained by other means. © 2003 American Institute of Physics.


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