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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1989),
  • paper TUBB3

Femtosecond studies of ultrafast processes in primary photosynthesis

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Abstract

In various photosynthetic systems primary energy conversion and energy storage proceed after a common reaction scheme: Light absorption populates via electronic transition high-lying vibrational levels of the S1 potential energy surface. A first S1 reaction uses this excess energy and changes the molecular coordinates to such an extent that direct backreaction into the initial state is avoided. From the relaxed S1 state rapid processes populate long-lived and energy-rich product states, which drive the further chemical reactions.

© 1989 Optical Society of America

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