The nonlinear optical properties of P3HT under picosecond laser irradiation

Abstract:

The nonlinear optical properties of P3HT in orthodichlorobenzene were investigated by Z-scan technique using second harmonic generation (532 nm) of mode-locked Nd:YAG laser in the picosecond domain. The experimental results show the magnitude of their nonlinear refraction indices was up to the order of 10-11 esu. The reverse saturable absorption of P3HT solution was observed and their nonlinear absorption coefficients reach up to 3.4 cm/GW. The strong optical nonlinearity of P3HT may find its new application in the photoclectric field. This work has been supported by the National Natural Science Foundation of China (No.11204214), and the Natural Science Foundation of Tianjin (No.14JCQNJC01900). E-mail:[e-mail]