Ultrafast High Intensity Optical Effects in New II-VI Compound Semiconductor Microstructures

该项目涉及超快激光技术的研究， 光激励半导体微结构，基于最近的 新型II-VI族化合物超晶格的制备进展， 量子威尔斯。 这些微结构具有它们的光学共振， 光谱的可见区域，特别是在蓝绿色， 半导体光电子技术目前非常差， 开发 预计这项工作将对发展中国家产生直接影响。 高速光开关和发光器件，基于 微观上理解高激发态 非平衡电子空穴等离子体和激子复合物。 一 要研究的微观结构的一个特殊特征是， 将磁性元件结合到高度空间可控的 时尚. 这将从快速的角度进行研究 微结构的磁有序的光致变化， 为了在磁光中利用这种现象 装置.

This project involves studies by ultrafast laser techniques of highly optically excited semiconductor microstructures, based on very recent advances in the fabrication of new II-VI compound superlattices and quantum wells. These microstructures have their optical resonances in the visible region of the spectrum, especially in the blue-green where semiconductor optoelectronics technology is presently very poorly developed. The work is expected to have direct impact in developing high speed optical switching and light emitting devices, based on miroscopic understanding of the physics of highly excited nonequilibrium electron-hole plasmas and excitonic complexes. A particular feature of the microstructures to be studied is the incorporation of magnetic elements in a highly spatially controllable fashion. This will be investigated from the standpoint of fast optically induced changes in magnetic ordering of the microstructures, with a view towards exploiting such phenomena in magneto-optical devices.