Presidential Young Investigator Award

该研究项目将重点发展新的飞秒测量技术及其在凝聚态和微电子器件物理中的超快过程中的应用。一个主要的推力是锻造飞秒激光技术与角度分辨紫外光发射光谱技术的新组合，以允许同时测量电子在光激发固体中的演化能量和晶体动量。传统的飞秒光学测量对电子动量不敏感。该实验将为III-V型半导体和金属的基本电子特性的飞秒电子散射过程提供新的见解。

This research program will focus on the development of new femtosecond measurement techniques and their application to ultrafast processes in condensed matter and microelectronic device physics. A major thrust is the forging of a new combination of femtosecond laser technology with the techniques of angle-resolved ultraviolet photoemission spectroscopy to permit simultaneous measurement of an electron's evolving energy and crystal momentum in photo-excited solids. Conventional femtosecond optical measurements are insensitive to electron momentum. This experiment will provide new insight into femtosecond electron scattering processes which underlie the basic electronic properties of III-V semiconductors and metals.