Instantaneous Mapping of Coherently Coupled Electronic Transitions and Energy Transfers in a Photosynthetic Complex Using Angle-Resolved Coherent Optical Wave-Mixing

被引：78

作者：

Mercer, Ian P. ^{[1
]}

El-Taha, Yasin C. ^{[2
]}

Kajumba, Nathaniel ^{[2
]}

Marangos, Jonathan P. ^{[2
]}

Tisch, John W. G. ^{[2
]}

Gabrielsen, Mads ^{[3
]}

Cogdell, Richard J. ^{[3
]}

Springate, Emma ^{[4
]}

Turcu, Edmund ^{[4
]}

机构：

[1] Univ Coll Dublin, Ctr Synth & Chem Biol, Sch Phys, Dublin 4, Ireland

[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Quantum Opt & Laser Sci Grp, London, England

[3] Univ Glasgow, Fac Biomed & Life Sci, Glasgow, Lanark, Scotland

[4] STFC Rutherford Appleton Lab, Cent Laser Facil, Didcot, Oxon, England

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 05期

基金：

英国生物技术与生命科学研究理事会; 英国工程与自然科学研究理事会;

关键词：

AB-INITIO; SPECTROSCOPY; RELAXATION; ACIDOPHILA; GENERATION; DYNAMICS; PULSES; LH2; FS;

D O I：

10.1103/PhysRevLett.102.057402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Understanding the role of coherent electronic motion is expected to resolve general questions of importance in macromolecular energy transfer. We demonstrate a novel nonlinear optical method, angle-resolved coherent wave mixing, that separates out coherently coupled electronic transitions and energy transfers in an instantaneous two-dimensional mapping. Angular resolution of the signal is achieved by using millimeter laser beam waists at the sample and by signal relay to the far field; for this we use a high energy, ultrabroadband hollow fiber laser source. We reveal quantum electronic beating with a time-ordered selection of transition energies in a photosynthetic complex.

引用

页数：4

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