Scattering of second-harmonic light from small spherical particles ordered in a crystalline lattice

被引：102

作者：

Martorell, J ^{[1
]}

Vilaseca, R ^{[1
]}

Corbalan, R ^{[1
]}

机构：

[1] UNIV AUTONOMA BARCELONA, DEPT FIS, BELLATERRA 08193, BARCELONA, SPAIN

来源：

PHYSICAL REVIEW A | 1997年 / 55卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.55.4520

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Experimental evidence of scattering of second-harmonic light from the surface of spherical particles of optical dimensions is presented. This mechanism for second-harmonic generation is observed in a suspension of monodisperse spherical colloidal particles, ordered in a centrosymmetric crystalline lattice. In this periodic structure the mechanism of phase matching is provided by the bending of the photon dispersion curve near the Bragg reflection band. A simple theoretical analysis based on the Rayleigh-Gans scattering approximation shows that constructive interference of the second-harmonic light scattered from different portions of a single sphere surface leads to a nonvanishing field with a quadrupolar distribution intensity pattern.

引用

页码：4520 / 4525

页数：6

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