Japanese Journal of Applied Physics · 2004 · 25 citations · 1 references
Natural SciencesChemistryMaterials ScienceOptical MaterialsOrganic ChemistryPhotonicsCrystal ChemistryElectro-optic EffectsNonlinear Optical MaterialsNonlinear OpticsOptical Properties Of MaterialsOptical Properties Of SolidsInorganic Nonlinear Optical MaterialsNonlinear Optical CrystalsNonlinear Optical PropertiesNonlinear Optical ResponseOrganic CrystalsOrganic Electro-optic CrystalsOrganic Nonlinear Optical Materials
The habit of organic 4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) crystals was successfully controlled by modifying their growth conditions. DAST solutions of different concentrations exhibited different aspect ratios (length/thickness). In addition, we measured the electrooptic (EO) sensitivity of DAST crystals using external EO probing to evaluate their crystallinity. The EO signal power obtained from the DAST crystals was proportional to crystal thickness. This result showed that the crystallinity of DAST crystals was maintained irrespective of their thicknesses. We also observed that the EO signal from DAST was about 30-fold larger than that of KTiOPO4 (KTP) with the same thickness.
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