Article,

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

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Appl. Phys. Lett., 82 (15): 2383--2385 (April 2003)
DOI: 10.1063/1.1565508

Abstract

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(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(3)-based sampler. (C) 2003 American Institute of Physics.

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