Toward remote high energy terahertz generation
Toward remote high energy terahertz generation
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DOI：
10.1063/1.3490702
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发表时间：
2010-09-13
影响因子：
4
通讯作者：
Chin, See Leang
中科院分区：
文献类型：
--
作者：
Wang, Tie-Jun;Yuan, Shuai;Chin, See Leang
实验证明，在空气中，双色飞秒激光诱导灯丝产生远距离太赫兹(THz)光。在16米处获得了远距离太赫兹辐射的记录。在5.5 THz以下的频率范围内，记录到了大于250 nJ的THz脉冲能量，比单色激发的能量高出两个数量级。用激光雷达遥测的N(2)背向散射荧光信号与太赫兹辐射成正比，这将为太赫兹脉冲的表征提供一种更实用的方法。(C)2010年美国物理研究所。[DOI：10.1063/1.3490702]
Remote terahertz (THz) generation from a two-color femtosecond laser-induced filament in air was experimentally demonstrated. A record of remote THz emission at 16 m was achieved. THz pulse energy more than 250 nJ in the frequency range below 5.5 THz was recorded; this is two orders of magnitude stronger than that from single-color excitation. Back-scattered nitrogen (N(2)) fluorescence signal remotely measured with a lidar is linearly proportional to the THz emission, which would provide a more practical method to characterize the THz pulses. (C) 2010 American Institute of Physics. [doi:10.1063/1.3490702]