Ultrafast Time-Resolved Optical Kerr Effect in Phthalocyanine Langmuir-Blodegett Film

The resonant optical Kerr effect in the Langmuir-Blodegett film of 2, 9, 16, 23-tetraheptadecylamido substituted vanadyl phthalocyanine was measured with femtosecond laser pulses to determine the relaxation time, and meanwhile slow decay components were observed. The ultrafast nonlinearity of the molecule was also measured.