Research Article
Third-Order Nonlinear Optical Behavior of Novel Polythiophene Derivatives Functionalized with Disperse Red 19 Chromophore
Figure 7
Open-aperture -scan measurements for solutions of copolymers P1 and P2 (3 × 10−3 M) in chloroform under femtosecond excitation (800 nm) with peak intensity of 22 GW/cm2.