Double-quantum resonances and exciton-scattering in coherent 2D spectroscopy of photosynthetic complexes

被引:52
作者
Abramavicius, Darius [1 ]
Voronine, Dmitri V. [1 ]
Mukamel, Shaul [1 ]
机构
[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
基金
美国国家科学基金会;
关键词
exciton transport; femtosecond spectroscopy; photosynthesis; light harvesting;
D O I
10.1073/pnas.0802926105
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
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.
引用
收藏
页码:8525 / 8530
页数:6
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