CARRIER-INDUCED PULSE NARROWING IN INDIUM-DOPED CDS

被引：4

作者：

HONIG, T

GUTOWSKI, J

BROSER, I

机构：

[1] Institut Für Festkörperphysik, Technischen Universität Berlin, Berlin

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1990年 / 159卷 / 01期

关键词：

D O I：

10.1002/pssb.2221590142

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Strong optical nonlinearities and bistability in the band‐gap region are known to occur in CdS doped with indium by 1016 to 1018 cm−3, which are due to the neutralization of ionized acceptors. In time‐resolved single‐beam measurements an absorptive effect becomes dominant for excitation densities higher than 1 MW/cm2 in addition to the known induced transmission. The combination of both processes yields a narrowing of the shape of the transmitted pulse. This phenomenon is studied in dependence of the laser wavelength, intensity, and polarization, as well as on the temperature and the dopant concentration. The experimental results can be understood in a model of interaction of free carriers with photonic polaritons. Copyright © 1990 WILEY‐VCH Verlag GmbH & Co. KGaA

引用

页码：363 / 370

页数：8

共 11 条

[1] FUNDAMENTAL ABSORPTION EDGE OF DOPED CDS SINGLE CRYSTALS [J].