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首页> 外文期刊>Crystal growth & design >Growth of ultrathin and highly efficient organic nonlinear optical crystal 4′-dimethylamino-N-methyl-4-stilbazolium p-chlorobenzenesulfonate for enhanced terahertz efficiency at higher frequencies
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Growth of ultrathin and highly efficient organic nonlinear optical crystal 4′-dimethylamino-N-methyl-4-stilbazolium p-chlorobenzenesulfonate for enhanced terahertz efficiency at higher frequencies

机译：超薄高效有机非线性光学晶体4'-二甲基氨基-N-甲基-4-苯乙烯基对氯苯磺酸盐的生长，可提高更高频率下的太赫兹效率

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摘要

Growth of an ultrathin (thickness as low as 23 μm) organic nonlinear optical crystal of 4′-dimethylamino-n-methyl-4-stilbazolium p-chlorobenzenesulfonate (DASC) has been achieved by the slope nucleation method for generating THz waves with relatively higher efficiencies especially at higher frequencies. The propensity of lower solubility of this material in methanol solvent as compared to 4′-dimethylamino-n-methyl-4-stilbazolium tosylate (DAST) was favorably exploited to obtain these thin crystals. The DASC crystals thus obtained were studied for the generation of THz waves, and their efficiency was compared with DAST and zinc telluride (ZnTe) single crystals. The enhancement THz efficiency observed in thinner DASC could be attributed to better velocity matching and weaker absorption as compared to thicker crystals of the same material.
机译：通过倾斜成核法产生相对较高的太赫兹波，已经实现了4'-二甲氨基-n-甲基-4-stilbazolium对氯苯磺酸盐（DASC）超薄（厚度低至23μm）有机非线性光学晶体的生长效率，尤其是在较高频率下。与4'-二甲基氨基-n-甲基-4-苯乙烯基甲苯磺酸甲苯磺酸酯（DAST）相比，该材料在甲醇溶剂中的溶解度较低的倾向被有利地用于获得这些薄晶体。研究了如此获得的DASC晶体的太赫兹波的产生，并将其效率与DAST和碲化锌（ZnTe）单晶进行了比较。与相同材料的较厚晶体相比，在较薄的DASC中观察到的增强的THz效率可归因于更好的速度匹配和较弱的吸收。

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