Enhanced coherent terahertz emission from indium arsenide in the presence of a magnetic field
Enhanced coherent terahertz emission from indium arsenide in the presence of a magnetic field
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DOI：
10.1063/1.126247
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发表时间：
2000-04-10
影响因子：
4
通讯作者：
Pepper, M
中科院分区：
文献类型：
--
作者：
McLaughlin, R;Corchia, A;Pepper, M
我们证明了砷化铟在170 K的磁场(B)中高达8 t的太赫兹（THz）发射增强，观察到可见光到太赫兹的转换效率增加了一个数量级，在更高的磁场下没有发现TE极化饱和的迹象。自由空间电光采样测量证实了该辐射在所调查的场范围内的相干性，并深入了解了光激发后的载流子运动，这可能是观测到的太赫兹功率增强的原因。(C) 2000年美国物理研究所。[s0003 - 6951(00) 03115 - 6]。
We demonstrate enhancement of terahertz (THz) emission from indium arsenide at 170 K in magnetic fields (B) up to 8 T. An order of magnitude increase in visible to terahertz conversion efficiency was observed, with no suggestion of saturation of the TE polarization at higher magnetic fields. Free-space electro-optic sampling measurements confirmed the coherent nature of this radiation over the field range investigated, and gave an insight into the carrier motion subsequent to photoexcitation, which may be responsible for the observed THz power enhancement. (C) 2000 American Institute of Physics. [S0003-6951(00)03115-6].