Instantaneous mapping of coherently coupled electronic transitions and energy transfers in a photosynthetic complex using angle-resolved coherent optical wave-mixing.
Instantaneous mapping of coherently coupled electronic transitions and energy transfers in a photosynthetic complex using angle-resolved coherent optical wave-mixing.
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DOI：
10.1103/physrevlett.102.057402
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发表时间：
2009-02
影响因子：
8.6
通讯作者：
I. Mercer;Y. El-Taha;N. Kajumba;J. Marangos;J. Tisch;M. Gabrielsen;R. Cogdell;E. Springate;E. Turcu
中科院分区：
文献类型：
--
作者：
I. Mercer;Y. El-Taha;N. Kajumba;J. Marangos;J. Tisch;M. Gabrielsen;R. Cogdell;E. Springate;E. Turcu
理解相干电子运动的作用有望解决大分子能量传递中的一般重要问题。我们展示了一种新的非线性光学方法，角分辨相干波混频，在瞬时二维映射中分离出相干耦合电子跃迁和能量转移。信号的角分辨率通过在样品处使用毫米激光束腰和信号中继到远场来实现；为此，我们采用了高能量、超宽带中空光纤激光源。我们揭示了量子电子跳动与时间顺序选择的过渡能量在光合复合体。
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.