Double-quantum resonances and exciton-scattering in coherent 2D spectroscopy of photosynthetic complexes.
basic_science · Level V
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- Record sourced from PubMed, PMID 18562293.
- Also identified by DOI 10.1073/pnas.0802926105 and PMC identifier 2438408.
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Abstract
A simulation study demonstrates how the nonlinear optical response of the Fenna-Matthews-Olson photosynthetic light-harvesting complex may be explored by a sequence of laser pulses specifically designed to probe the correlated dynamics of double excitations. Cross peaks in the 2D correlation plots of the spectra reveal projections of the double-exciton wavefunctions onto a basis of direct products of single excitons. An alternative physical interpretation of these signals in terms of quasiparticle scattering is developed.
Medical subject headings
- Photosynthetic Reaction Center Complex Proteins
- Spectrum Analysis