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

新型 II-VI 化合物半导体微结构中的超快高强度光学效应

• 批准号: 8916026
• 负责人: Arto Nurmikko
• 金额: $ 28.4万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8916026&HistoricalAwards=false
• 关键词: Ultrafast; Intensity; Optical; Effects; New

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.

该项目涉及利用超快激光技术研究高光激发半导体微结构，其基础是在制备新的II-VI化合物超晶格和量子阱方面的最新进展。这些微结构在光谱的可见光区域有其光学共振，特别是在半导体光电子技术目前非常不发达的蓝绿色区域。基于对高激发非平衡电子-空穴等离子体和激子复合体物理的微观理解，这项工作有望对开发高速光学开关和发光器件产生直接影响。要研究的微结构的一个特殊特征是以高度空间可控的方式并入磁性元素。这将从微结构的磁有序的快速光学诱导变化的角度进行研究，以期在磁光器件中利用这种现象。