Excited state dynamics in phthalocyanines studied using degenerate four wave mixing with incoherent light
作者： S. Venugopal Rao , D. Narayana Rao
DOI: 10.1142/S1088424602000270
关键词: Chemistry 、 Beam (structure) 、 Relaxation (NMR) 、 Excited state 、 Molecule 、 Signal 、 Optics 、 Population 、 Phase (waves) 、 Molecular physics 、 Vibration
摘要: We present our experimental results on the measurements of excited state dynamics in phthalocyanines (Pc, CuPc, FePc, and ZnPc) using degenerate four wave mixing with incoherent light (DFWM-IL). Three different timescales were observed, for all samples, phase conjugate signal recorded as a function delay probe beam standard backward geometry. The fastest component (< 170 fs) is associated to relaxation Sn states slowest components (∼3-5 ps 35-55 ps) vibration population times from S1 state. are compared those obtained shorter pulses various techniques similar molecules. consequences such short lifetimes also discussed view strong optical limiting properties these
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