[HTML][HTML] Effects of non-exciton components excited by broadband pulses on quantum beats in a GaAs/AlAs multiple quantum well
O Kojima, Y Iwasaki, T Kita, K Akahane - Scientific Reports, 2017 - nature.com
O Kojima, Y Iwasaki, T Kita, K Akahane
Scientific Reports, 2017•nature.comIn this study, we report the effect of the excitation of non-exciton components caused by
broadband pulses on quantum beat oscillation. Using a spectrally controlled pump pulse, a
long-lived oscillation is clearly observed, and the pump-power dependence shows the
suppression of the dephasing rate of the oscillation. Our results from incoherent carrier
generation using a continuous wave laser demonstrate that the non-exciton components
behaving as free carriers increase the oscillation dephasing rate.
broadband pulses on quantum beat oscillation. Using a spectrally controlled pump pulse, a
long-lived oscillation is clearly observed, and the pump-power dependence shows the
suppression of the dephasing rate of the oscillation. Our results from incoherent carrier
generation using a continuous wave laser demonstrate that the non-exciton components
behaving as free carriers increase the oscillation dephasing rate.
Abstract
In this study, we report the effect of the excitation of non-exciton components caused by broadband pulses on quantum beat oscillation. Using a spectrally controlled pump pulse, a long-lived oscillation is clearly observed, and the pump-power dependence shows the suppression of the dephasing rate of the oscillation. Our results from incoherent carrier generation using a continuous wave laser demonstrate that the non-exciton components behaving as free carriers increase the oscillation dephasing rate.
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