DISPERSION OF THE EXCITON POLARITON BRANCHES IN CUCL AND THEIR K-DEPENDENT SPLITTING IN A MAGNETIC-FIELD

被引：22

作者：

FROHLICH, D ^{[1
]}

KOHLER, P ^{[1
]}

NIESWAND, W ^{[1
]}

MOHLER, E ^{[1
]}

机构：

[1] UNIV FRANKFURT,INST PHYS,W-6000 FRANKFURT,GERMANY

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1991年 / 167卷 / 01期

关键词：

D O I：

10.1002/pssb.2221670117

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The method of three-photon difference-frequency generation is used to measure resonances on the lower polariton branch in CuCl. Due to the small linewidth of the resonances (smallest width 80-mu-eV) it is possible to determine the splitting of the lower branch in a magnetic field at different k-values for the first time. Resonances on the upper polariton branches and on the longitudinal exciton branches can also be excited with the use of two- and three-photon sum-frequency generation and two-photon absorption. The rather peculiar wavevector-dependent splitting of the lower polariton branch is explained quantitatively by taking into account the field induced mixing of the Z3- and Z1,2-excitons.

引用

页码：147 / 157

页数：11

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[Anonymous], 1963, PROPERTIES 32 POINT

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