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Large optical gain from four-wave mixing instabilities in semiconductor quantum wells

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 نشر من قبل Stefan Schumacher
 تاريخ النشر 2007
  مجال البحث فيزياء
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Based on a microscopic many-particle theory, we predict large optical gain in the probe and background-free four-wave mixing directions caused by excitonic instabilities in semiconductor quantum wells. For a single quantum well with radiative-decay limited dephasing in a typical pump-probe setup we discuss the microscopic driving mechanisms and polarization and frequency dependence of these instabilities.



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