Transient polarization state of four-wave-mixing signals : identification of higher-order correlations

Titelangaben

Neukirch, U. ; Haase, B. ; Gutowski, Jürgen ; Bartels, G. ; Stahl, Arne ; Axt, Vollrath Martin ; Nürnberger, J. ; Faschinger, W.:
Transient polarization state of four-wave-mixing signals : identification of higher-order correlations.
In: Technical Digest : Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference. Postconference edition. - Washington, DC : Optical Society of America , 1999 . - S. 223 . - (OSA Technical Digest Series ; 1999 )
ISBN 1-55752-596-X
DOI: https://doi.org/10.1109/QELS.1999.807569

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Abstract

Recently, four-wave-mixing (FWM) experiments on semiconductors have been extended by time-resolved analysis of the polarization state of the diffracted pulses. It was found that the seemingly unpolarized fraction of the signal observed in time-integrated data is caused by averaging over a pulse having a perfect polarization state which, however, changes in time. Since in certain configurations the occurrence of a time dependent polarization is due to processes of higher than third order in the driving fields, the measurement of its intensity dependence allows for a sensitive test of theories which include higher-order correlations as is presented below. The experiments are conducted on a ZnSe/ZnMgSSe single quantum wells.