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Ultrafast Dynamics

机译：超快动力学

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To design, understand and eventually optimize ultrafast electronic or optoelectronic devices, it is critical to have a good grasp of the ultrafast response of the materials and structures. The field of ultrafast phenomena was born more than 15 years ago in response to this need. In the early 1980s, many investigations focused on the cooling of hot carriers in semiconductors such as GaAs. Over the years, the interest of the community has broadened, to include fundamental studies of many phenomena that take place on a subpicosecond time scle, and more recently well below 100 fs. We now have a detailed understanding of electron-electron, electron-hole, and hole-hole scatering, hot carier-phonon and hot carrier-plasmon collisions, exciton dynamics, and other many body effects, not only in bulk semiconductors, but also in quantum wells and more recently quantum wires and dots. Significant theoretical and experimental work has translated this basic knowledge into a better understnaidng of the ultrafast optical response, for example the bandege optical nonlinearties.
机译：为了设计，理解并最终优化超快电子或光电设备，掌握材料和结构的超快响应至关重要。为了响应这一需求，超快现象领域诞生于15年前。在1980年代初期，许多研究集中于冷却GaAs等半导体中的热载流子。多年来，社区的兴趣不断扩大，其中包括对亚皮秒级以下时间间隔内发生的许多现象的基础研究，而最近一次远低于100 fs。现在，我们不仅对体半导体中，而且对电子，电子空穴和空穴-空穴，热载子-声子和热载流子-等离激元碰撞，激子动力学以及其他许多体效应都有详细的了解。量子阱以及最近的量子线和量子点。大量的理论和实验工作已将这一基础知识转化为对超快光学响应（例如，绷带光学非线性）的更好理解。

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