Longitudinal terahertz wave generation from an air plasma filament induced by a femtosecond laser
Longitudinal terahertz wave generation from an air plasma filament induced by a femtosecond laser
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DOI：
10.1063/1.4802482
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发表时间：
2013-04-15
影响因子：
4
通讯作者：
Suemoto, Tohru
中科院分区：
文献类型：
--
作者：
Minami, Yasuo;Kurihara, Takayuki;Suemoto, Tohru
我们已经产生和检测的纵向偏振（Z偏振）太赫兹（THz）波聚焦的锥形传播的太赫兹光束产生的等离子体丝由飞秒激光脉冲。在实验中，我们观察到一个径向偏振场的准直区域和Z偏振场的焦点在时域。Z极化THz电场的最大值达到1.0 kV/cm。并对焦点处的Z偏振场和径向场进行了定量讨论。我们预计这项技术将在太赫兹时域光谱学中得到应用。(C)2013 AIP Publishing LLC [http：//dx.doi.org/10.1063/1.4802482]
We have generated and detected a longitudinally polarized (Z-polarized) terahertz (THz) wave by focusing a conically propagating THz beam generated from a plasma filament induced by a femtosecond laser pulse. In the experiment, we observed a radially polarized field in a collimated region and Z-polarized field at focus in the time domain. The maximum value of the Z-polarized THz electric field reached 1.0 kV/cm. It was also quantitatively discussed about the Z-polarized field and the radial field at the focal point. We expect this technique to find application in THz time domain spectroscopy. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4802482]