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Advanced optical characterization of AlGaAs/GaAs superlattices for active regions in quantum cascade lasers

机译：量子级联激光器中有源区的AlGaAs / GaAs超晶格的先进光学表征

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摘要

In this work, AlGaAs/GaAs superlattices with layer composition imitating the active region of quantum cascade lasers emitting in the mid infrared spectral range were investigated. Using optical spectroscopy techniques (photoreflectance and photolumines-cence) together with numerical calculations performed within the effective mass approximation, we studied the band structure of the formed conduction minibands including the modification of the wave functions with the external electric field. In addition, the applied growth rates of the GaAs/AlGaAs superlattices have been verified by investigating the Stokes shift between the emission and absorption spectra. Finally, it has been shown that testing the structure imitating the operational laser device might be performed (without the electric field applied) by photoluminescence measurements realized within the Fourier Transformed Infrared Spectroscopy based concept.
机译：在这项工作中，研究了具有层组成模仿在中红外光谱范围内发射的量子级联激光器的有源区的AlGaAs / GaAs超晶格。通过使用光谱技术（光反射和光致发光度）以及在有效质量近似内进行的数值计算，我们研究了所形成的导电微带的能带结构，包括随外部电场对波函数的修正。此外，通过研究发射光谱和吸收光谱之间的斯托克斯位移，已经验证了GaAs / AlGaAs超晶格的应用增长率。最终，已经表明，可以通过在基于傅立叶变换红外光谱的概念中实现的光致发光测量来执行模拟操作激光设备的结构的测试（不施加电场）。

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  • 来源
    《Optical and quantum electronics》 |2015年第4期|945-952|共8页
  • 作者

    F. Janiak; M. Dyksik; M. Motyka; K. Ryczko; J. Misiewicz; K. Kosiel; M. Bugajski;

  • 作者单位

    Institute of Physics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland;

    Institute of Physics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland;

    Institute of Physics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland;

    Institute of Physics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland;

    Institute of Physics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland;

    Institute of Electron Technology, Al. Lotnikow 32/46, 02-668 Warsaw, Poland;

    Institute of Electron Technology, Al. Lotnikow 32/46, 02-668 Warsaw, Poland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    AlGaAs/GaAs superlattices; Quantum cascade lasers; Photoreflectance; Photoluminescence; Mid infrared; FTIR;

    机译：AlGaAs / GaAs超晶格;量子级联激光器;光反射光致发光;中红外;红外光谱;

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