Exactly solvable model of surface second-harmonic generation

被引：50

作者：

Mendoza, BS ^{[1
]}

Mochan, WL ^{[1
]}

机构：

[1] UNIV NACL AUTONOMA MEXICO,INST FIS,LAB CUERNAVACA,CUERNAVACA 62251,MORELOS,MEXICO

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.53.4999

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We develop a model for surface second-harmonic generation (SHG) consisting of a Semi-infinite system made up of a continuous distribution of harmonic polarizable entities, each of which responds nonlinearly to the gradient of the field. The near discontinuity of some field components at the surface yields a finite surface susceptibility tensor characterized by the parameters a(omega) and b(omega), as well as a bulk nonlinear response charcterized by d(omega). We obtain analytical expressions for a, b, and d in terms of the linear dielectric functions epsilon(omega) and epsilon(2 omega). These expressions are exact within our model, but can be employed to obtain approximate SHG spectra for arbitrary systems.

引用

页码：4999 / 5006

页数：8

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