CHI(5) SIGNATURE IN THE 4-WAVE-MIXING SIGNAL FROM A GAAS/AL0.3GA0.7AS SUPERLATTICE

被引：38

作者：

BARTELS, G

AXT, VM

VICTOR, K

STAHL, A

LEISCHING, P

KOHLER, K

机构：

[1] RHEIN WESTFAL TH AACHEN,INST HALBLEITERTECH 2,D-52056 AACHEN,GERMANY

[2] FRAUNHOFER INST APPL SOLID STATE PHYS,D-79108 FREIBURG,GERMANY

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.51.11217

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We analyze coherent beats with a period corresponding to the biexciton binding energy in time-integrated four-wave-mixing experiments in a GaAs/Al0.3Ga0.7As superlattice at high excitation densities. Theoretical and experimental evidence is presented that the beating in the decay is a fifth-order process in the electric field, and therefore χ(5) contributions to the four-wave-mixing signal in the 2k2-k1 direction have to be considered for a qualitative interpretation of the measured data. In order to model the experiment we use a microscopic dynamic density-matrix theory in a real-space representation. © 1995 The American Physical Society.

引用

页码：11217 / 11220

页数：4

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