Coherent control of molecules by using pulse shaping in the mid-infrared

中红外光是高选择性驱动分子振动的有力工具。在这个项目中，我们实验证明，通过对激发的中红外脉冲进行位相整形，振动阶梯的攀升效率得到了极大的提高。此外，我们还从理论上研究了给出较高效率的最佳波形。我们还证明了以相干方式控制多个振动模的激发是可能的：对于耦合振子系统，构成任何相干控制方案的基础的多径干扰是被操纵的。

The mid-infrared light serves as a powerful tool to drive molecular vibrational motions with high selectivity. In this project, we experimentally demonstrate that the vibrational ladder climbing efficiency is highly enhanced by the phase-shaping of the exciting mid-infrared pulses. In addition, we theoretically study the optimum waveform that gives higher efficiencies. We also demonstrate that it is possible to control the excitations of multiple vibrational modes in a coherent manner: the multipath interferences, which form the basis for any coherent control schemes, were manipulated for coupled oscillator system.