Time-resolved impulse response of the magnetoplasmon resonance in a two-dimensional electron gas
Time-resolved impulse response of the magnetoplasmon resonance in a two-dimensional electron gas
复制标题
二维电子气中磁等离子共振的时间分辨脉冲响应
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
S. Lyon
中科院分区：
文献类型：
--
作者：
E. Shaner;S. Lyon
We have used optically excited ultrashort electrical pulses to measure the magnetoplasmon resonance of a two-dimensional electron gas formed in an AlGaAs/GaAs heterostructure at frequencies up to 200 GHz. This is accomplished by incorporating the sample into a guided wave probe operating in a pumped ${}^{3}mathrm{He}$ system. We are able to detect the resonance by launching a stimulus pulse in the guide, and monitoring the system response in a time-resolved pump-probe arrangement. Data obtained from measurements yield resonant frequencies that agree with the magnetoplasmon dispersion relation.
