Engineering Research Equipment: Femtosecond Laser Spectroscopy of Semiconductor Nanostructures

布朗大学工程系将根据这项NSF工程研究设备补助金购买飞秒激光设备，该基金将致力于支持工程研究。激光设备将用于支持几个研究项目，特别是半导体纳米结构的时间分辨光学光谱学。这项工作包括正在开发的用于短可见波长的光电子学应用的宽带隙半导体材料，以及其中二维和低维电子具有高迁移率的异质结构。这种激光仪器实现的超快光学技术将使在几纳米尺度上实时跟踪小型半导体结构中的电子激发成为可能。

The Division of Engineering at Brown University will purchase femtosecond laser equipment under this NSF Engineering Research Equipment Grant which will be dedicated to support research in engineering. The laser equipment will be used to support several research projects, including in particular time-resolved optical spectroscopy of semiconductor nanostructures. The work includes wide-bandgap semiconductor materials which are being developed for optoelectronic applications at short visible wavelengths as well as heterostructures in which two- dimensional and lower dimensional electrons are of high mobility. The ultrafast optical techniques made possible by this laser instrumentation will enable the tracking of electronic excitations in small semiconductor structures on a scale of a few nm in real time.