Abstract-7 terahertz broadband GaP electro-optic sensor

Q. Wu, X. C. Zhang,

https://aip.scitation.org/doi/abs/10.1063/1.118691

We report a broadband coherent terahertz detection system using GaP as a free-space electro-optic field sensor with a demonstrated 3 dB bandwidth of 3.6 THz, useful bandwidth of 7 THz, and a pulse width of 185 fs. These figures represent new records in the coherent detection of free-space THz radiation. Sensor response as a function of crystal thickness and copropagation velocity mismatch dispersion in the THz regime is studied.