52 research outputs found
Nonmonotonic Decay of Nonequilibrium Polariton Condensate in Direct-Gap Semiconductors
Full text linkTime evolution of a nonequilibrium polariton condensate has been studied in
the framework of a microscopic approach. It has been shown that due to
polariton-polariton scattering a significant condensate depletion takes place
in a comparatively short time interval. The condensate decay occurs in the form
of multiple echo signals. Distribution-function dynamics of noncondensate
polaritons have been investigated. It has been shown that at the initial stage
of evolution the distribution function has the form of a bell. Then
oscillations arise in the contour of the distribution function, which further
transform into small chaotic ripples. The appearance of a short-wavelength wing
of the distribution function has been demonstrated. We have pointed out the
enhancement and then partial extinction of the sharp extra peak arising within
the time interval characterized by small values of polariton condensate density
and its relatively slow changes.Comment: 20 pages, LaTeX 2.09; in press in PR
Specific features of two-photon optical nutation in a system of biexcitons in semiconductors
No full textNonlinear surface waves in a symmetrical three-layer structure caused by the generation of excitons and biexcitons in semiconductors
No full textThe Exciton–Polariton Dispersion Law under the Action of Strong Pumping in the Region of the M-Band of Luminescence
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The role of elastic interparticle interactions in the dynamics of raman atom-molecule conversion in a Bose condensate
No full textNonlinear asymmetric waves induced in a symmetrical three-layer structure by the generation of excitons and biexcitons in semiconductors
No full textTransmission of phase-modulated laser light through a thin semiconductor film in the excitonic spectral range and an optical analog of the feshbach effect
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