Beat structure in spectrally resolved four-wave mixing under crosslinear polarization in GaAs quantum wells

-, Suryadi and Ishihara, T. and Ohyama, H. and Kadoya, Y. and Yamanishi, M. (2000) Beat structure in spectrally resolved four-wave mixing under crosslinear polarization in GaAs quantum wells. Physica E: Low-dimensional Systems and Nanostructures , 7 (3-4). 572 - 575. ISSN 1386-9477

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Abstract

The polarization dependence of beat structure in spectrally resolved four-wave mixing was investigated on GaAs multiple quantum wells. Under crosslinear polarization we observed a beating structure at higher energy region of the main spectral peak due to biexciton–exciton transition. The beat has a period of 0.95 ps and is constructive at delay time , which suggests the corresponding double Feynman diagrams to be of the same type. By shortening the central wavelength of the sub-ps laser, we observed the distinctive peak corresponding to the beat period. Even in GaAs system, which is generally believed to have a small biexcitonic effect, there are two effective 2-exciton states with well-defined energies which are required to describe the third-order optical nonlinearly.

Item Type:	Article (Journal)
Additional Information:	6606/6746
Uncontrolled Keywords:	Quantum beats
Subjects:	Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science
Depositing User:	Dr Suryadi
Date Deposited:	19 Feb 2014 15:47
Last Modified:	19 Feb 2014 15:47
URI:	http://irep.iium.edu.my/id/eprint/6746

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