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
收藏
页码：2651 / 2655
页数：5
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