Femtosecond Laser Studies of Ultrafast Processes in Optical Materials

这项研究计划将利用最近发展的飞秒激光和光学技术来研究具有器件含义的光学材料中的超快过程。其目的是：(1)利用飞秒光学相关光谱测量化合物半导体中非平衡载流子的带内弛豫速率；(2)类似地研究多量子阱和超晶格结构中热载流子的驰豫动力学；(3)确定可能适用于飞秒染料激光器的染料分子的驰豫动力学。(4)扩大飞秒光学相关光谱的波长范围，将热发光纳入测量范围。

This research program will make use of the recently developed femtosecond lasers and optical techniques to study the ultrafast processes in optical materials that have device implications. The objectives are: (1) To measure the intraband relaxation rates of nonequilibrium carriers in compound semiconductors using femtosecond optical correlation spectroscopy, (2) To make a similar study of the relaxation dynamics of hot carriers in multiple quantum well and superlattice structures, (3) To determine the relaxation dynamics of dye molecules that might be suitable for use in femtosecond dye lasers, (4) To extend the wavelenght range of femtosecond optical correlation spectroscopy by including the hot luminescence in the measurements.