Nonlinear optical response of colloidal suspensions.
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.
Lee
W M
WM
SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, United Kingdom. wml6@st-andrews.ac.uk
El-Ganainy
R
R
Christodoulides
D N
DN
Dholakia
K
K
Wright
E M
EM
D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D008956:Models, Chemical; D009391:Nephelometry and Turbidimetry / Q000379:methods*; D017711:Nonlinear Dynamics; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation
D003102:Colloids