STRONG ASYMMETRY OF NONRESONANT OPTICAL 4-WAVE MIXING IN PBSE AND PBSNSE

被引：1

作者：

DORBATH, K

TACKE, M

HAFELE, HG

机构：

[1] Phys. Inst., Wurzburg Univ.

来源：

SEMICONDUCTOR SCIENCE AND TECHNOLOGY | 1990年 / 5卷

关键词：

D O I：

10.1088/0268-1242/5/3S/077

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Non-resonant four-wave mixing experiments were performed for a determination of the free carrier intraband energy relaxation time in semiconductors. The signal intensity was measured as a function of the pump beam detuning Delta omega . For PbSe and PbSnSe this line shape showed an unexpected strong asymmetry; that is, the Stokes signal dependence on Delta omega was different from that of the anti-Stokes signal. The authors explain this asymmetry by an interference with resonant scattering due to a shallow impurity with binding energy of the order of a few cm-1.

引用

页码：S342 / S345

页数：4

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