Abstract
We investigate the spectra of two-colour few-cycle pulses in a semiconductor quantum well (QW) with consideration of quantum size effects. Our results show that, in the few-cycle regime, the spectral peak at 4ω0 can be achieved even under the condition of a two-colour ω0 − 3ω0 pulse combination. Moreover, when the quantum size is modified, the enlargement or suppression of the spectral peak at 4ω0 or 5ω0 can be selectively controlled by the relative phase of the two-colour few-cycle pulses.
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