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Highly efficient terahertz electro-optic sampling by material optimization at 1060 nm

: Pradarutti, B.; Matthäus, G.; Riehemann, S.; Notni, G.; Nolte, S.; Tünnermann, A.


Optics communications 281 (2008), Nr.19, S.5031-5035
ISSN: 0030-4018
Fraunhofer IOF ()

Different electro-optic crystals (CdTe, DAST, GaAs, GaP, and ZnTe) are investigated with respect to their ability as detection crystals for terahertz pulse electro-optic sampling at a wavelength of 1060 nm. Calculations of the detection response are in good qualitative agreement with experimental results. While CdTe shows the strongest signal for applications below 1 THz, GaP exhibits a broadband spectrum. By the choice of an adequate crystal a comparable detection efficiency to electro-optic sampling at a wavelength of 800 nm can be achieved.