Jian-Hui Yin, Liang Li, Zhou Yang
Jul 1, 2012
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Influential Citations
36
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Journal
Dyes and Pigments
Abstract
A new organic nonlinear optical crystal 4- N , N -dimethylamino-4′- N ′-methyl-stilbazolium 3-carboxy-4-hydroxybenzenesulfonate (DSCHS) has been developed with very promising properties for quadratic nonlinear optical applications. DSCHS single crystals with non-centrosymmetric structure have been obtained from aqueous methanol solution. X-ray crystallographic analysis revealed that the crystal structure of DSCHS is triclinic P 1 with the chromophores aligned perfectly parallel, leading to the maximum possible order parameter 3 θ > = 1 in the crystalline state, which is optimal for electro-optics, THz-wave generation and field detection applications. Kurtz powder test has shown that DSCHS exhibits a very large second-order optical nonlinearity, with a 30 percent higher second-harmonic signal than the well-known organic nonlinear optical crystal 4- N , N -dimethylamino-4′- N ′-methyl-stilbazolium tosylate (DAST).