Publikation:

Inefficiency of intervalley transfer in narrow InGaAs/AlAsSb quantum wells

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2008

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Tribuzy, Christiana Villas-Bôas
Ohser, Sabine
Priegnitz, Marlen
Winnerl, Stephan
Schneider, Harald
Helm, Manfred
Biermann, Klaus
Künzel, Harald

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-121145
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https://doi.org/10.1002/pssc.200776556
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Physica Status Solidi / C. 2008, 5(1), pp. 229-231. Available under: doi: 10.1002/pssc.200776556

Zusammenfassung

By using femtosecond pump-probe spectroscopy we investigate the intersubband relaxation dynamics in narrow InGaAs/AlAsSb quantum wells. A biexponential behavior is an indication of intervalley scattering, which is, however, much slower than known from bulk material. This may be the reason why quantum cascade lasers at wavelengths as short as 3 m are actually functioning In addition, when pumping slightly below resonance we observe an induced transient absorption, which can be interpreted in terms of electron heating within the first subband.

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ISO 690TRIBUZY, Christiana Villas-Bôas, Sabine OHSER, Marlen PRIEGNITZ, Stephan WINNERL, Harald SCHNEIDER, Manfred HELM, Jörg NEUHAUS, Thomas DEKORSY, Klaus BIERMANN, Harald KÜNZEL, 2008. Inefficiency of intervalley transfer in narrow InGaAs/AlAsSb quantum wells. In: Physica Status Solidi / C. 2008, 5(1), pp. 229-231. Available under: doi: 10.1002/pssc.200776556
BibTex
@article{Tribuzy2008Ineff-886,
  year={2008},
  doi={10.1002/pssc.200776556},
  title={Inefficiency of intervalley transfer in narrow InGaAs/AlAsSb quantum wells},
  number={1},
  volume={5},
  journal={Physica Status Solidi / C},
  pages={229--231},
  author={Tribuzy, Christiana Villas-Bôas and Ohser, Sabine and Priegnitz, Marlen and Winnerl, Stephan and Schneider, Harald and Helm, Manfred and Neuhaus, Jörg and Dekorsy, Thomas and Biermann, Klaus and Künzel, Harald}
}
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