Efficient generation of 380 fs pulses of THz radiation by ultrafast laser pulse excitation of a biased metal‐semiconductor interface
Efficient generation of 380 fs pulses of THz radiation by ultrafast laser pulse excitation of a biased metal‐semiconductor interface
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DOI：
10.1063/1.104695
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发表时间：
1991-01
影响因子：
4
通讯作者：
N. Katzenellenbogen;D. Grischkowsky
中科院分区：
文献类型：
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作者：
N. Katzenellenbogen;D. Grischkowsky
我们已经证明了一种新的方法产生脉冲的自由传播太赫兹电磁辐射。由此产生的380 fs脉冲是迄今为止在自由空间中直接测量的最短THz脉冲，并且比赫兹偶极子或谐振偶极子天线产生的脉冲更强大。在这些太赫兹辐射脉冲上观察到短至190 fs的时间特征，从而说明了超快的接收器响应时间。
We have demonstrated a new method of generating pulses of freely propagating THz electromagnetic radiation. The resulting 380 fs pulses are the shortest directly measured THz pulses in free space to date and are more powerful than those generated by Hertzian dipoles or by resonant dipole antennas. Temporal features as short as 190 fs were observed on these THz radiation pulses and thereby, illustrate an ultrafast receiver response time.