Nonlinear optical absorption of photosynthetic pigment molecules in leaves

作者：Ye, Zi-Piao^*

来源：Photosynthesis Research, 2012, 112(1): 31-37.

DOI：10.1007/s11120-012-9730-0

• Average lifetime of photosynthetic pigment molecule in the excited state
• Effective optical absorption cross-section
• Optical absorption coefficient of photosynthetic pigment molecules
• Photosynthetic pigment molecule

A mathematical formulation of the relationship between optical absorption coefficient of photosynthetic pigment molecules and light intensity was developed. It showed that physical parameters of photosynthetic pigment molecule (i.e., light absorption cross-section of photosynthetic pigment molecule, its average lifetime in the excited state, total photosynthetic pigment molecules, the statistical weight, or degeneracy of energy level of photosynthetic pigment molecules in the ground state and in the excited state) influenced on both the light absorption coefficient and effective light absorption cross-section of photosynthetic pigment molecules. Moreover, it also showed that both the light absorption coefficient and effective light absorption cross-section of photosynthetic pigment molecules were not constant, they decreased nonlinearly with light intensity increasing. The occupation numbers of photosynthetic pigment molecules in the excited states increased nonlinearly with light intensity increasing.

• 出版日期2012-4
• 单位井冈山大学