Ultrafast Studies of Electronic and Nuclear Responses

在这个由化学系实验物理化学计划资助的项目中，波士顿大学的劳伦斯·D·齐格勒教授将进行一系列实验，以研究强激光场对电子和核的响应。将开展三项工作：1)用超快光谱技术研究超临界流体(SCF)的溶剂化性质；2)发展一种新的双光子吸收技术；3)一种表征短光脉冲的新方法。第一部分包括三个子部分，即：a)超临界流体溶液的飞秒红外光子回波的研究；b)超临界流体中氢的光学外差探测(OHD)旋转拉曼响应的研究；以及c)纯净超临界流体的偏振特性的OHD喇曼响应的研究。这项研究将与理论小组和一个实验物理小组合作完成。学生和博士后研究助理将参与这项研究，并将在当代物理化学的前沿领域之一接受培训，为在学术界、行业或政府实验室深造或就业做准备。

In this project, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Prof. Lawrence D. Ziegler of Boston University will conduct a series of experiments to investigate the electronic and nuclear responses to impressed strong laser fields. Three tasks will be pursued: 1) ultrafast spectroscopic techniques will be used to investigate the solvation properties of supercritical fluids (SCFs); 2) a novel two-photon absorption technique will be developed; and 3) a new method for the characterization of short optical pulses will be implemented. The first of these consists of three sub-parts, namely: a) investigations of femtosecond infrared photon echoes of SCF solutions; b) investigations of the optical heterodyne-detected (OHD) rotational Raman responses of hydrogen in SCFs; and c) a study of the polarization specific OHD Raman responses of neat SCFs. This research will be done in collaboration with theory groups and an experimental physics group. Students and postdoctoral research associates will participate in this research and will be trained in one of the forefront areas of contemporary physical chemistry in preparation for advance study or employment in academia, industry, or government laboratories.