Effects of non-exciton components excited by broadband pulses on quantum beats in a GaAs/AlAs multiple quantum well

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...

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Autores principales: Kojima, Osamu, Iwasaki, Yuki, Kita, Takashi, Akahane, Kouichi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5269727/
https://www.ncbi.nlm.nih.gov/pubmed/28128344
http://dx.doi.org/10.1038/srep41496
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author Kojima, Osamu
Iwasaki, Yuki
Kita, Takashi
Akahane, Kouichi
author_facet Kojima, Osamu
Iwasaki, Yuki
Kita, Takashi
Akahane, Kouichi
author_sort Kojima, Osamu
collection PubMed
description 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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spelling pubmed-52697272017-02-01 Effects of non-exciton components excited by broadband pulses on quantum beats in a GaAs/AlAs multiple quantum well Kojima, Osamu Iwasaki, Yuki Kita, Takashi Akahane, Kouichi Sci Rep Article 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. Nature Publishing Group 2017-01-27 /pmc/articles/PMC5269727/ /pubmed/28128344 http://dx.doi.org/10.1038/srep41496 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Kojima, Osamu
Iwasaki, Yuki
Kita, Takashi
Akahane, Kouichi
Effects of non-exciton components excited by broadband pulses on quantum beats in a GaAs/AlAs multiple quantum well
title Effects of non-exciton components excited by broadband pulses on quantum beats in a GaAs/AlAs multiple quantum well
title_full Effects of non-exciton components excited by broadband pulses on quantum beats in a GaAs/AlAs multiple quantum well
title_fullStr Effects of non-exciton components excited by broadband pulses on quantum beats in a GaAs/AlAs multiple quantum well
title_full_unstemmed Effects of non-exciton components excited by broadband pulses on quantum beats in a GaAs/AlAs multiple quantum well
title_short Effects of non-exciton components excited by broadband pulses on quantum beats in a GaAs/AlAs multiple quantum well
title_sort effects of non-exciton components excited by broadband pulses on quantum beats in a gaas/alas multiple quantum well
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5269727/
https://www.ncbi.nlm.nih.gov/pubmed/28128344
http://dx.doi.org/10.1038/srep41496
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