Electro-optic sampling system with a single-crystal 4-N,N-dimethylamino-4′-N′-methyl-4-stilbazolium tosylate sensor

Zheng, X.; Wu, S.; Sobolewski, Roman; Adam, R.; Mikulics, M.; Kordosˇ, P.; Siegel, M.
April 2003
Applied Physics Letters;4/14/2003, Vol. 82 Issue 15, p2383
Academic Journal
We present an electro-optic (EO) sampling system based on an organic ionic salt crystal, 4-N,N-dimethylamino-4'-N'-methyl-4-stilbazolium tosylate (DAST) transducer. Compared to LiTaO[sub 3], the DAST lower dielectric permittivity and much higher electro-optic coefficient dramatically improveme electric-field coupling into the EO crystal, which results in a much better signal-to-noise ratio of the sampling system. Submillivolt signals can be easily measured with the DAST sensor. Time resolution of the DAST-based EO system is the same as that of the LiTaO[sub 3]-based sampler.


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