Second-harmonic generation in chiral liquid crystals

被引：3
作者：
Hermann, DS
机构：
[1] INFM, Unita Napoli, I-80126 Naples, Italy
[2] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2001年 / 358卷
关键词：
second-harmonic generation; chirality; ferroelectric liquid crystal; cholesteric liquid crystal; nonlinear optics; thresholdless antiferroelectricity;
D O I：
10.1080/10587250108028279
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Second-Harmonic Generation (SHG) occurs under special circumstances in chiral liquid crystals, such as Ferroelectric Liquid Crystals and, induced by an external electric field, in Short-Pitch Cholesteric Liquid Crystals. Previously, SHG in FLCs has been studied mainly for the application potential of FLCs as a promising NLO-material. However, with the discovery in the last three years of novel electro-optic effects and liquid crystalline phases - i.e., the high-contrast, analog "V-shaped switching" found to occur in so-called "thresholdless antiferroelectric" liquid crystals; and liquid crystals consisting of bow-shaped molecules - the emphasis is shifting towards SHG becoming a standard tool of investigation in liquid crystal research. In this context symmetry, manifestations of chirality as well as analysis and interpretation issues become more important than ever before.
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收藏
页码：167 / 183
页数：17
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