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arXiv 2000-04-11 0 views

Reflection and absorption of QWs irradiated by light pulses in a strong magnetic field

Korovin, I. G. Lang L. I. · Contreras-Solorio, D. A. · Pavlov, S. T.

Original · EN

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 γₗ⁻¹ ≤ ℏ/ΔE. A damping echo of the exciting pulse appears through the time intervals 2πℏ/ΔE in the case of the very short light pulses γₗ⁻¹≪ ℏ/ΔE. 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.

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