Li Chia-Yeh, Seletskiy Denis V, Yang Zhou, Sheik-Bahae Mansoor
Opt Express. 2015 May 4;23(9):11436-43. doi: 10.1364/OE.23.011436.
We report a robust method of coherent detection of broadband THz pulses using terahertz induced second-harmonic (TISH) generation in a laser induced air plasma together with a controlled second harmonic optical bias. We discuss a role of the bias field and its phase in the process of coherent detection. Phase-matching considerations subject to plasma dispersion are also examined.
我们报告了一种利用激光诱导空气等离子体中的太赫兹诱导二次谐波（TISH）产生以及可控的二次谐波光学偏置来对宽带太赫兹脉冲进行相干检测的稳健方法。我们讨论了偏置场及其相位在相干检测过程中的作用。还研究了受等离子体色散影响的相位匹配问题。
