Ultrafast laser control of electron dynamics in atoms, molecules and solids.
Ultrafast laser control of electron dynamics in atoms, molecules and solids.
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DOI：
10.1039/c1fd00109d
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发表时间：
2011-10
影响因子：
3.4
通讯作者：
M. Wollenhaupt;T. Baumert
中科院分区：
文献类型：
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作者：
M. Wollenhaupt;T. Baumert
利用激光的相干特性以及量子力学物质干涉，以便将化学反应引导到预定义的目标通道是相干控制的基础。在分子动力学的时间尺度上操作的激光源的增加的可用性，即飞秒制度，以及在分子动力学的时间尺度上在振幅、相位和偏振方面对光进行整形的能力的增加，使得该领域的时间方面成为前沿。自从上一次法拉第讨论（法拉第讨论113，分子反应动力学中的立体化学和控制）致力于这一主题超过十年前，一个巨大的交叉施肥到邻近的“量子技术学科”在实验技术和理论发展方面已经发生。例如核磁共振、量子信息、超冷分子、非线性光谱学和显微镜以及极端非线性光学，包括阿秒科学。正如组织者所指出的，这次会议使我们回到化学，旨在评估我们对化学中的一致性和控制的一般理解的最新进展，并确定未来的新途径。为了达到这个目的，我们将在导论中首先简要回顾相干控制的一些方面。这不会是完全全面的，主要是为了给一些背景，我们的研究小组在控制（相干）电子激发与定制的光场目前的实验努力。将给出后者的例子和前景。
Exploiting coherence properties of laser light together with quantum mechanical matter interferences in order to steer a chemical reaction into a pre-defined target channel is the basis of coherent control. The increasing availability of laser sources operating on the time scale of molecular dynamics, i.e. the femtosecond regime, and the increasing capabilities of shaping light in terms of amplitude, phase and polarization also on the time scale of molecular dynamics brought the temporal aspect of this field to the fore. Since the last Faraday Discussion (Faraday Discussion 113, Stereochemistry and control in molecular reaction dynamics) devoted to this topic more than a decade ago a tremendous cross-fertilization to neighbouring "quantum technology disciplines" in terms of experimental techniques and theoretical developments has occurred. Examples are NMR, quantum information, ultracold molecules, nonlinear spectroscopy and microscopy and extreme nonlinear optics including attosecond-science. As pointed out by the organizers, this meeting brings us back to chemistry and aims to assess recent progress in our general understanding of coherence and control in chemistry and to define new avenues for the future. To that end we will in the Introductory lecture first shortly review some aspects of coherent control. This will not be fully comprehensive and is mainly meant to give some background to current experimental efforts of our research group in controlling (coherent) electronic excitations with tailored light fields. Examples and perspectives for the latter will be given.