Terahertz radiation emission from GaMnAs
Terahertz radiation emission from GaMnAs
复制标题
DOI：
10.1063/1.2206154
复制
发表时间：
2006-06
影响因子：
4
通讯作者：
J. Héroux;Y. Ino;M. Kuwata-Gonokami;Y. Hashimoto;S. Katsumoto
中科院分区：
文献类型：
--
作者：
J. Héroux;Y. Ino;M. Kuwata-Gonokami;Y. Hashimoto;S. Katsumoto
在400 nm波长的泵浦脉冲激励下，观察到铁磁性GaMnAs样品的太赫兹辐射与样品的磁化强度M有关，这可以用M对光生载流子运动的强烈影响来解释，这一现象与直流反常霍尔效应有关。结果表明，铁磁材料作为紧凑型太赫兹源在垂直于表面的方向上发射的潜力。
Terahertz radiation is observed from ferromagnetic GaMnAs samples excited with 400nm wavelength pump pulses and is related to the sample magnetization M. The emission can be explained by the strong influence of M on the photogenerated carrier motion, a phenomenon related to the dc anomalous Hall effect. Results illustrate the potential of ferromagnetic materials to be used as compact terahertz sources emitting in a direction normal to the surface.