Ultrafast reaction imaging using carrier envelope phase stabilized pulses

稳定载波包络相稳定的高强度少周期脉冲用于超快化学反应成像。研制了一种以孤立阿秒脉冲为探测脉冲，以强少周期脉冲为泵浦脉冲，适用于泵浦和探针测量的超高真空兼容光电子光离子符合动量谱仪。提出了提高重碎片离子动量分辨率的动量图成像方法和仅从焦点区域选择信号进行解纠缠强度平均的空间图成像方法。

Stable carrier envelope phase stabilized high intensity few-cycle pulse is generated for ultrafast chemical reaction imaging. Ultra high vacuum compatible photo-electron photo-ion coincidence momentum spectrometer which is applicable for a pump and probe measurement using an isolated attosecond pulse as a probe pulse and an intense few-cycle pulse as a pump pulse is developed. Momentum map imaging method for improving momentum resolution of heavy fragment ions and spatial map imaging method for selecting signals only from focal region for disentangling intensity averaging are developed.