Quick and simple method to measure third-order nonlinear optical properties of dye-doped polymer films

Kuzyk, M. G.; Dirk, C. W.
April 1989
Applied Physics Letters;4/24/1989, Vol. 54 Issue 17, p1628
Academic Journal
Quadratic phase modulation is used to measure the electronic third-order nonlinear optical susceptibility of thin polymer film solid solutions of organic dyes. This simple technique is shown to provide quick measurements of the χ(3)1133 component of the third-order optical susceptibility. The measured quadratic electro-optic coefficient of 7.5 wt. % (2.5 mol %) of a dicyanovinyl azo dye in poly(methyl methacrylate) (PMMA) is 4.4×10-21 m2/V2, which corresponds to a direct current Kerr coefficient of 1.4×10-11 esu. The electronic and orientational mechanisms, whose response times are faster than 30 ps, are discussed.


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