Abstract-Electro-optic sampling of terahertz waves by laser pulses with an edge-cut spectrum in birefringent crystal

I. E. Ilyakov, G. Kh. Kitaeva, B. V. Shishkin, and R. A. Akhmedzhanov

https://www.osapublishing.org/ol/abstract.cfm?uri=ol-42-9-1704

We demonstrate a terahertz detection technique based on variations of the energy of femtosecond laser pulses with an edge-cut spectrum in birefringent electro-optic crystal—periodically poled lithium niobate (PPLN). The method is compared with the standard electro-optic detection scheme utilizing GaP crystal. The experimental results show that the studied technique is suited for use with birefringent crystals and allows one to achieve a much better response to the terahertz wave radiation at quasi-phase-matching frequencies of PPLN.

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