作者: Guohong Ma , Lijun Guo , Jun Mi , Ye Liu , Shixiong Qian
DOI: 10.1016/S0040-6090(02)00246-8
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摘要: Abstract The optical properties of titanylphthalocyanine (TiOPc) thin film fabricated by physical jet deposition technique were investigated using absorption, femtosecond (fs) Kerr effect (OKE) and fs pump–probe techniques. third-order nonlinear susceptibility TiOPc was measured to be 3×10 −10 esu. OKE response films shows a decay process with subpicosecond time constant, demonstrating that the excited state molecule has little contribution photo-induced birefringence. From experiment, complicated behavior three components observed, which originates from exciton–exciton annihilation process, enhanced intersystem crossing relaxation triplet state.