Non-centrosymmetric alignment of an optically nonlinear dye

被引：6

作者：

Ashwell, GJ

Jefferies, G

Ranjan, R

机构：

[1] Centre for Molecular Electronics, Cranfield University, Cranfield

来源：

ELECTRONICS LETTERS | 1996年 / 32卷 / 01期

关键词：

Langfmuir-Blodgett films; optical harmonic generation;

D O I：

10.1049/el:19960013

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Multilayer Langmuir-Blodgett (LB) films of the organic dye, E-N-octadecyl-4-[2-(4-dibutylaminophenyl)ethenyl]pyridinium octadecylsulphate, are non-centrosymmetric. The second harmonic generation (SHG) increases quadratically with the number of layers and gives rise to a moderately high susceptibility of chi((2))(zzz) 70pm V-1 at 1.064 mu m. The real and imaginary parts of the dielectric permittivity at 532nm and the LB layer thickness are epsilon(r) = 2.93 and epsilon(i) = 0.30 and l = 3.70nm, respectively.

引用

收藏

页码：59 / 61

页数：3

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