Ultrafast lasers can indeed induce photosynthesis by providing light at the correct wavelength, similar to natural sunlight. Researchers, including Fleming and his team, utilize a technique known as two-dimensional electronic spectroscopy to investigate electron transfer reactions during photosynthesis. This method employs femtosecond pulses from three laser beams to track the flow of excitation energy through molecular complexes, with a fourth beam acting as a local oscillator to enhance spectroscopic signals. This advanced approach allows for unprecedented temporal resolution in studying the dynamics of photosynthesis.
PREREQUISITESResearchers in biophysics, chemists studying photosynthesis, and anyone interested in the application of ultrafast lasers in biological processes.
Fleming and his research group have developed a technique called two-dimensional electronic spectroscopy that enables them to follow the flow of light-induced excitation energy through molecular complexes with femtosecond temporal resolution. The technique involves sequentially flashing a sample with femtosecond pulses of light from three laser beams. A fourth beam is used as a local oscillator to amplify and detect the resulting spectroscopic signals as the excitation energy from the laser lights is transferred from one molecule to the next. (The excitation energy changes the way each molecule absorbs and emits light.)