Ultrafast release and capture of carriers in InGaAs/GaAs quantum dots observed by time-resolved terahertz spectroscopy
Porte HP, Uhd Jepsen P, Daghestani N, Rafailov EU, Turchinovich D (2009)
Applied Physics Letters 94(26).
Zeitschriftenaufsatz
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Autor*in
Porte, H. P.;
Uhd Jepsen, P.;
Daghestani, N.;
Rafailov, E. U.;
Turchinovich, DmitryUniBi
Einrichtung
Abstract / Bemerkung
We observe ultrafast release and capture of charge carriers in InGaAs/GaAs quantum dots in a room-temperature optical pump-terahertz probe experiment sensitive to the population dynamics of conducting states. In case of resonant excitation of the quantum dot ground state, the maximum conductivity is achieved at approximately 35 ps after photoexcitation, which is assigned to release of carriers from the quantum dots. When exciting carriers into the conduction band of the barriers, depletion of the conductivity via carrier capture into the quantum dots with a few picosecond pump fluence-dependent time constant was observed.
Erscheinungsjahr
2009
Zeitschriftentitel
Applied Physics Letters
Band
94
Ausgabe
26
ISSN
0003-6951
eISSN
1077-3118
Page URI
https://pub.uni-bielefeld.de/record/2983646
Zitieren
Porte HP, Uhd Jepsen P, Daghestani N, Rafailov EU, Turchinovich D. Ultrafast release and capture of carriers in InGaAs/GaAs quantum dots observed by time-resolved terahertz spectroscopy. Applied Physics Letters. 2009;94(26).
Porte, H. P., Uhd Jepsen, P., Daghestani, N., Rafailov, E. U., & Turchinovich, D. (2009). Ultrafast release and capture of carriers in InGaAs/GaAs quantum dots observed by time-resolved terahertz spectroscopy. Applied Physics Letters, 94(26). https://doi.org/10.1063/1.3158958
Porte, H. P., Uhd Jepsen, P., Daghestani, N., Rafailov, E. U., and Turchinovich, Dmitry. 2009. “Ultrafast release and capture of carriers in InGaAs/GaAs quantum dots observed by time-resolved terahertz spectroscopy”. Applied Physics Letters 94 (26).
Porte, H. P., Uhd Jepsen, P., Daghestani, N., Rafailov, E. U., and Turchinovich, D. (2009). Ultrafast release and capture of carriers in InGaAs/GaAs quantum dots observed by time-resolved terahertz spectroscopy. Applied Physics Letters 94.
Porte, H.P., et al., 2009. Ultrafast release and capture of carriers in InGaAs/GaAs quantum dots observed by time-resolved terahertz spectroscopy. Applied Physics Letters, 94(26).
H.P. Porte, et al., “Ultrafast release and capture of carriers in InGaAs/GaAs quantum dots observed by time-resolved terahertz spectroscopy”, Applied Physics Letters, vol. 94, 2009.
Porte, H.P., Uhd Jepsen, P., Daghestani, N., Rafailov, E.U., Turchinovich, D.: Ultrafast release and capture of carriers in InGaAs/GaAs quantum dots observed by time-resolved terahertz spectroscopy. Applied Physics Letters. 94, (2009).
Porte, H. P., Uhd Jepsen, P., Daghestani, N., Rafailov, E. U., and Turchinovich, Dmitry. “Ultrafast release and capture of carriers in InGaAs/GaAs quantum dots observed by time-resolved terahertz spectroscopy”. Applied Physics Letters 94.26 (2009).
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