PICOSECOND STIMULATED PHOTON-ECHO DUE TO INTRINSIC EXCITATIONS IN SEMICONDUCTOR MIXED-CRYSTALS

被引：105

作者：

NOLL, G ^{[1
]}

SIEGNER, U ^{[1
]}

SHEVEL, SG ^{[1
]}

GOBEL, EO ^{[1
]}

机构：

[1] UNIV MARBURG,ZENTRUM MAT WISSENSCH,W-3550 MARBURG,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.64.792

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Time-resolved demonstration of picosecond photon echoes due to intrinsic optical excitations of a semiconductor is presented. Phase relaxation times up to several hundred picoseconds are found for excitons localized by chemical disorder in CdSxSe1-x mixed crystals. These long dephasing times are attributed to reduced scattering of the localized excitons as compared to free excitons. Dephasing is identified as due to energy relaxation of the excitons. © 1990 The American Physical Society.

引用

页码：792 / 795

页数：4

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