FREE-CARRIER INDUCED SATURATION OF THE FARADAY-ROTATION IN SEMIMAGNETIC SEMICONDUCTORS

被引：7

作者：

HUGONNARDBRUYERE, S

BUSS, C

FREY, R

FLYTZANIS, C

机构：

[1] Labaoratoire D'Optique Quantique, Centre National de la Recherche Scientifique, Ecole Polytechnique

来源：

APPLIED PHYSICS LETTERS | 1995年 / 66卷 / 16期

关键词：

D O I：

10.1063/1.113686

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Large photoinduced Faraday rotations of the polarization direction of a probe beam traveling through a semimagnetic semiconductor are obtained at temperatures higher than that of liquid nitrogen when a pump pulse is sent through the material. These rotations are quasiproportional to the photoinduced free-carrier density and the applied magnetic field and are strongly resonant with the band-gap-probe frequency detuning. A model based on the free-carrier induced saturation of the refractive indices explains well the experimental observations. The high values obtained for the photoinduced polarization rotations (more than 1°pJ-1 μm2) make such a process attractive for the design of optical signal processing devices.© 1995 American Institute of Physics.

引用

页码：2043 / 2045

页数：3

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