Generation of single-cycle THz transients with high electric-field amplitudes
Generation of single-cycle THz transients with high electric-field amplitudes
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DOI：
10.1364/ol.30.002805
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发表时间：
2005-10-15
期刊：
影响因子：
3.6
通讯作者：
Elsaesser, T
中科院分区：
文献类型：
--
作者：
Bartel, T;Gaal, P;Elsaesser, T
频率范围为 0.3-7 THz 且电场幅度超过 400 kV/cm 的单周期太赫兹 (THz) 瞬变是通过电离空气中 Ti:蓝宝石放大器发出的 25 fs 脉冲的基波和二次谐波的四波混合产生的。使用 ZnTe 和 GaP 晶体进行电光采样可以充分表征这些瞬态。人们可以通过改变入射脉冲的长度来调节太赫兹瞬变的中心频率。电场幅度随着入射脉冲能量线性增加。 (c) 2005 年美国光学学会
Single-cycle terahertz (THz) transients in the frequency range 0.3-7 THz with electric-field amplitudes of more than 400 kV/cm are generated by four-wave mixing of the fundamental and the second harmonic of 25 fs pulses from a Ti:sapphire amplifier in ionized air. These transients are fully characterized by electrooptic sampling with ZnTe and GaP crystals. One can tune the center frequency of the THz transients by varying the length of the incident pulse. The electric-field amplitude increases linearly with the incident pulse energy. (c) 2005 Optical Society of America