Time resolved carrier dynamics in graphene

石墨烯中的时间分辨载流子动力学

• 批准号: 171596922
• 负责人: Professor Dr. Heinrich Kurz (†)
• 金额: --
• 依托单位: Lehrstuhl für Allgemeine Elektrotechnik und Theoretische Nachrichtentechnik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/171596922?language=en
• 关键词: Time; resolved; carrier; dynamics; graphene

The linear dispersion relation and high mobility of charge carriers in graphene offer large potential for ultra-fast electronic and photonic devices, whose performance is intrinsically tied to the ultra-fast relaxation dynamics of nonequilibrium carrier dynamics. Hence understand-ing of the relaxation processes is crucial for designing high speed electronic and photonic devices. Femtosecond time resolved spectroscopy is a powerful tool to probe the evolution of the relaxation processes, as it can monitor sample properties on a time scale of a few tens of femtoseconds, which is indispensable to observe the quasi particle dynamics in graphene.By an interdisciplinary approach between electrical-engineering and funda-mental physics the ultra-fast relaxation processes in graphene and gra-phene based devices will be investigated using time-resolved femtosecond spectroscopy to gain knowledge necessary for understanding electronic transport in high speed electronic and photonic devices. Aside from the application on electronic devices the feasibility of using graphene as saturable absorber material for passive mode-locking in femtosecond lasers and as ultra-fast photo detectors will be explored.

石墨烯中电荷载流子的线性色散关系和高迁移率为超快电子和光子器件提供了巨大的潜力，其性能本质上与非平衡载流子动力学的超快弛豫动力学有关。因此，理解弛豫过程对于设计高速电子和光子器件至关重要。飞秒时间分辨光谱是探测弛豫过程演变的有力工具，因为它可以在几十飞秒的时间尺度上监测样品性质，这是观察石墨烯中准粒子动力学不可缺少的一部分。通过电子工程和基础物理之间的交叉学科方法，将使用时间-解决飞秒光谱学，以获得必要的知识，了解高速电子和光子器件中的电子输运。除了在电子器件上的应用之外，还将探索使用石墨烯作为可饱和吸收体材料用于飞秒激光器中的被动锁模和作为超快光电探测器的可行性。

项目成果

Infrared transparent graphene heater for silicon photonic integrated circuits.

• DOI: 10.1364/oe.24.007871
• 发表时间: 2016-04
• 期刊: Optics express
• 影响因子: 3.8
• 作者: D. Schall;M. Mohsin;A. Sagade;M. Otto;B. Chmielak;S. Suckow;A. Giesecke;D. Neumaier;H. Kurz

50 GBit/s Photodetectors Based on Wafer-Scale Graphene for Integrated Silicon Photonic Communication Systems

• DOI: 10.1021/ph5001605
• 发表时间: 2014-09-01
• 期刊: ACS PHOTONICS
• 影响因子: 7
• 作者: Schall, Daniel;Neumaier, Daniel;Kurz, Heinrich
• 通讯作者: Kurz, Heinrich