Inefficiency of intervalley transfer in narrow InGaAs/AlAsSb quantum wells

Tribuzy, Christiana Villas-Bôas; Ohser, Sabine; Priegnitz, Marlen; Winnerl, Stephan; Schneider, Harald; Helm, Manfred; Neuhaus, Jörg; Dekorsy, Thomas; Biermann, Klaus; Künzel, Harald

Inefficiency of intervalley transfer in narrow InGaAs/AlAsSb quantum wells

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Datum

2008

Autor:innen

Tribuzy, Christiana Villas-Bôas

Ohser, Sabine

Priegnitz, Marlen

Winnerl, Stephan

Schneider, Harald

Helm, Manfred

Neuhaus, Jörg

Dekorsy, Thomas

Biermann, Klaus

Künzel, Harald

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

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.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

TRIBUZY, 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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