Broadband field-resolved terahertz detection via laser induced air plasma with controlled optical bias.

@article{Li2015BroadbandFT,
  title={Broadband field-resolved terahertz detection via laser induced air plasma with controlled optical bias.},
  author={Chaoyang Li and D V Seletskiy and Zhong Lei Yang and M. Sheik-bahae},
  journal={Optics express},
  year={2015},
  volume={23 9},
  pages={
          11436-43
        }
}
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. 

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