Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2000-04-11
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
9 pages, 5 figures with captions, corrected typos, the reference [5] is qualified, references[20], [21] for section I
Scientific paper
It has been shown that the non-sinusoidal character oscillations appear in the transmitted, reflected and absorbed light fluxes when light pulses irradiate a semiconductor quantum well (QW), containing a set of a large number of the equidistant energy levels of electronic excitations. The oscillation amplitude is comparable to the flux values for the short pulses, duration of which \gamma_l^{-1} \leq \hbar/\Delta E. A damping echo of the exciting pulse appears through the time intervals 2\pi\hbar/\Delta E in the case of the very short light pulses \gamma_l^{-1}\ll \hbar/\Delta E. Symmetrical and asymmetrical pulses with a sharp front have been considered. Our theory is applicable for the narrow QWs in a strong magnetic field, when the equidistant energy levels correspond to the electron-hole pairs with different Landau quantum numbers.
Contreras-Solorio D. A.
Korovin G. Lang L. I. I.
Pavlov S. T.
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