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Fifth-order nonlinear optical response of excitonic states in an InAs quantum dot ensemble measured with two-dimensional spectroscopy

机译:二维光谱法测量InAs量子点集合中激子态的五阶非线性光学响应

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摘要

Exciton, trion, and biexciton dephasing rates are measured for an ensemble of InAs quantum dots using two-dimensional Fourier-transform spectroscopy. The two-dimensional spectra reveal that the dephasing rate of each excitonic state is similar for all dots in the ensemble and the rates are independent of excitation density. An additional spectral feature (too weak to be observed in the time-integrated four-wave mixing signal) appears at high excitation density and is attributed to the χ~((5)) biexcitonic nonlinear response.%045313-1
机译:使用二维傅立叶变换光谱法测量InAs量子点集合的激子,三重和双激子相移速率。二维光谱表明,每个激子态的移相速率对于集合中的所有点都相似,并且速率与激发密度无关。在高激发密度下会出现一个额外的频谱特征(太弱,无法在时间积分四波混合信号中观察到),这归因于χ〜((5))双激子非线性响应。%045313-1

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  • 来源
    《Physical review》 |2013年第4期|586-590|共5页
  • 作者单位

    JILA, University of Colorado and National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA,Department of Physics, University of Colorado, Boulder, Colorado 80309-0390, USA;

    JILA, University of Colorado and National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA,Department of Physics, University of Colorado, Boulder, Colorado 80309-0390, USA;

    JILA, University of Colorado and National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA;

    Experimentelle Physik 2, Technische Universitaet Dortmund, D-44221 Dortmund, Germany,A. F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia;

    Experimentelle Physik 2, Technische Universitaet Dortmund, D-44221 Dortmund, Germany;

    A. F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia;

    Lehrstuhlfuer Angewandte Festkoerperphysik, Ruhr-Universitaet Bochum, Universitaetsstrasse 150, D-44780 Bochum, Germany;

    JILA, University of Colorado and National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA,Department of Physics, University of Colorado, Boulder, Colorado 80309-0390, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    quantum dots; quantum dots;

    机译:量子点;量子点;

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