Second-harmonic generation in interleaved hemicyanine/nitrogencrown Langmuir-Blodgett multilayers

被引：28

作者：

Ma, SH

Lu, XZ

Xu, JH

Wang, WC

Zhang, ZM

机构：

[1] Lab. of Laser Physics and Optics, Department of Physics, Fudan University

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1997年 / 30卷 / 19期

关键词：

D O I：

10.1088/0022-3727/30/19/001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A novel disc-like amphiphilic molecule, with two-chain nitrogencrown was adopted as a spacer material for fabrication of optical nonlinear Langmuir-Blodgett (LB) multilayers. The intensity of second-harmonic generation (SHG) increased quadratically with the bilayer number (up to 116 bilayers) in Y-type hemicyanine/nitrogencrown interleaving LB multilayers due to improvement of the structural properties by insertion of the long hydrophobic tail of hemicyanine molecules between two chains of nitrogencrown molecules. The second-order susceptibility chi(ZXX)((2))(-2 omega; omega, omega) = 18 pM V-1 (or 4.35 x 10(-8) esu) was obtained by measuring SHG from the hemicyanine samples.

引用

页码：2651 / 2655

页数：5

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