Nonlinear optical response of colloidal suspensions

Lee, W. M.; El-Ganainy, R.; Christodoulides, D. N.; Dholakia, K.; Wright, E. M.

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Nonlinear optical response of colloidal suspensions

Date

2009-06-08

Authors

Lee, W. M.

El-Ganainy, R.

Christodoulides, D. N.

Dholakia, K.

Wright, E. M.

Publisher

Optical Society of America

Abstract

We experimentally probed the nonlinear optical response of aqueous nano-colloidal suspensions to provide a test of the theoretical approaches that have been proposed for the nonlinearity, namely an exponential model, an artificial Kerr medium, and a non-ideal gas model. The best agreement with experiment is found using the non-ideal gas model for the colloidal suspension which in turn can be used to infer values for the second virial coefficient of the medium and the nonlinear coefficients.