Abstract
We investigate the effect of an induced sum-frequency signal on the transient modulation of interband-resonant probe light by a train of intersubband-resonant coupling light pulses in undoped quantum wells. The origin of the generated sum-frequency signal lies in the asymmetry of the three-level quantum well structure. The modulation characteristics are found to be significantly affected in the presence of a strong sum-frequency signal that builds up proportionately to the input probe field.
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Pis’ma Zh. Éksp. Teor. Fiz. 66, No. 6, 379–385 (25 September 1997)
Published in English in the original Russian journal. Edited by Steve Torstveit.