A new amphiphilic compound NMOB [2-nitro-5-(N-methyl-N-decosyl) aminobenzoic acid] with both good film forming property and high optical nonlinearity was synthesized for applications of Langmuir-Blodgett (LB) films in waveguide-type second harmonic generation (SHG) devices. The near-quadratic dependence of the SHG intensity on the bilayer number, the small angle x-ray diffraction (SAXD) patterns and the temporal stability of alternating CdA (cadmium arachidate)/NMOB multilayers confirmed their good film structures. We obtained the hyperpolarizability beta of NMOB of 6.3 x 10(-50) C m(3) V-2 (1.7 X 10(-29) esu) at a fundamental wavelength of 0.064 mu m from transmitted SHG measurements which agreed with those deduced from our linear electro-optic (EO) modulated attenuated total reflection (ATR) spectra at 832 nm, 633 nm and 488 nm in order of magnitude. A resonant enhancement of the EO response near the absorption band in NMOB monolayers was observed for the first time. [References: 14]
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机译：合成了具有良好成膜性和高光学非线性的新型两亲化合物NMOB [2-硝基-5-（N-甲基-N-去甲酰基）氨基苯甲酸]，用于Langmuir-Blodgett（LB）膜在波导型中的应用二次谐波（SHG）器件。 SHG强度对双层数的近二次依赖性，小角度X射线衍射（SAXD）模式以及交替的CdA（花生四烯酸镉）/ NMOB多层膜的时间稳定性证明了它们的良好膜结构。我们从传输的SHG测量中获得了在0.064μm基本波长下NMOB的超极化率beta为6.3 x 10（-50）C m（3）V-2（1.7 X 10（-29）esu）从我们在832 nm，633 nm和488 nm的线性电光（EO）调制的衰减全反射（ATR）光谱中按数量级排序。首次观察到NMOB单层吸收带附近的EO响应共振增强。 [参考：14]
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