Extreme Multiphoton Coupling in Molecules

本研究项目致力于研究分子的强场激发的性质和程度。最近的理论工作表明，双原子分子具有一种电子结构，在这种结构中，交流斯塔克位移大大减小，多光子耦合大大增强，以至于可以通过共振过程产生高阶(N10)多光子pi脉冲。分子在强激光场中的行为将使用光学参数放大器来研究，作为激光波长的函数，而紫外光荧光光谱将被用作激发态形成的高度特异性的指示器。这项工作预计将对激光/物质相互作用的广阔领域产生重大影响。此外，这些实验需要最先进的激光系统，让学生亲身体验最新的激光和光学技术，从而为他们进入各种基于研究或高科技的职业道路做好准备。

This research project focuses on the study of the nature and extent of the strong field excitation of molecules. Recent theoretical work shows that diatomic molecules possess an electronic structure in which the AC Stark shift is greatly reduced and the multi-photon coupling is greatly enhanced to such an extent that high-order (n10) multi-photon pi pulses can be produced through a resonant process. The behavior of molecules in strong laser fields as a function of laser wavelength will be studied using an optical parametric amplifier, and ultraviolet fluorescence spectroscopy will be used as a highly specific indicator of the excited states formed. This work is expected to have a major impact in the vast field of laser/matter interactions. Moreover, these experiments require state-of-the-art laser systems, giving students hands-on experience with the latest laser and optical technologies and, thus, will prepare them for a variety of research-based or high-tech career paths.