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題名 | Anharmonic Oscillator Approach to the Exciton-Exciton Annihilation Dynamics in Molecular Aggregates= |
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作者 | Renger,T.; May,V.; Sundstrom,V.; Kuhn,O.; |
期刊 | Journal of the Chinese Chemical Society |
出版日期 | 20000800 |
卷期 | 47:4A 民89.08 |
頁次 | 頁807-819 |
分類號 | 341 |
語文 | eng |
關鍵詞 | Molecular aggregates; Photosynthesis; Frenkel excitons; Exciton annihilation; Nonlinear optics; |
英文摘要 | The dynamics of Frenkel excitons in aggregates of coupled electronic three-level molecules in the presence of strong external fields is investigated. Particular emphasis is paid to the microscopic inclusion of exciton-exciton annihilation. It appears as a combination of exciton fusion and internal conversion processes which are taken into account within perturbation theory. The influence of an environment on the exciton dynamics is treated by means of stochastic fluctuations of the electronic transition energies. A closed set of equations of motion is derived and it is shown how nonlinear opticalspectra can be calculated non-perturbatively. |
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