Optically induced polarization rotations in CdTe/CdMnTe multiple quantum wells
作者:
M. Haddad,
P. Leisching,
R. Frey,
C. Flytzanis,
J. Cibert,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 73,
issue 14
页码: 1940-1942
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.122329
出版商: AIP
数据来源: AIP
摘要:
We report large polarization state rotations of a weak pulsed beam in CdTe/CdMnTe quantum wells photoinduced by intense circularly polarized pulsed pump beam. Time-resolved analysis of the effect shows that, at moderate pump fluences, the polarization state rotation is due to the combined effect of many-body interactions and spectral hole burning at early times and to photoinduced magnetization at longer ones. At higher pump fluences, space filling and degenerate four-wave mixing become important. At low pump fluences (few&mgr;J/cm2) already the polarization rotation photoinduced at early times can be as large as a few degrees making these multiple quantum wells potential candidates for applications. ©1998 American Institute of Physics.
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