Studies of optical nonlinear properties of asymmetric ionic liquids

Nonlinear refraction and absorption properties to twelve ionic liquids were measured by the Z-scan technique. k/dn/dT value reference was determinate by using only one measure. An Influence of anion and cation to nonlinear optical properties was analysed. Cations with mayor length chain and aromatic systems presented better nonlinear optical properties that the alicyclic cations. [NO3] anion presented the best contribution to these properties independently of cation used.