Nonlinear responses and quantum yield measurement of DCJ dye under CW laser illumination

Nonlinear optical properties and quantum yield of DCJ dye (DCM-derived material) has been investigated in order to explore the applications of this material. The magnitude and sign of nonlinear refractive index (n_2) and absorption coefficient (?) of DCJ were measured using a single beam Z-scan technique. DCJ quantum yield has also been measured by a direct technique based on the thermal lens effect. The measured parameters showed that DCJ exhibits strong nonlinear optical properties.