Figures of merit for excited state absorption of organic compounds
The excited state absorption of organic dyes was analyzed on the basis of the rate equations. It is shown that the excited state absorption is characterized by two figures of merit namely: contrast parameter and critical intensity. The comparison of the experimental data with the numerical calculation shows that the developed conception gives adequate description of the excited state absorption of the organic compounds. The figures of merit for excited state absorption of organic dyes of phthalocyanine series (PcPb, PcZn, PcSn, PcSi) and porphyrin zinc is calculated.