ESSENTIAL-STATES MECHANISM OF OPTICAL NONLINEARITY IN PI-CONJUGATED POLYMERS

被引：178

作者：

DIXIT, SN ^{[1
]}

GUO, DD ^{[1
]}

MAZUMDAR, S ^{[1
]}

机构：

[1] UNIV ARIZONA,DEPT PHYS,TUCSON,AZ 85721

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.43.6781

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a microscopic mechanism of optical nonlinearity in conjugated polymers. It is shown that the bulk of the nonlinearity is determined by only two well-defined channels, even though an infinite number of channels are possible in principle. We are able to explain the complete frequency dependence of the third-harmonic generation in both trans-polyacetylene and polydiacetylene within the same model without invoking weak Coulomb interactions between electrons or interchain interactions.

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页码：6781 / 6784

页数：4

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