Induced absorption dynamics in quantum dot based waveguide electroabsorbers
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Date
2010
Authors
Piwonski, Tomasz
Pulka, Jaroslaw
Viktorov, Evgeny A.
Huyet, Guillaume
Manning, Robert J.
Houlihan, John
Mandel, Paul
Erneux, Thomas
Journal Title
Journal ISSN
Volume Title
Publisher
AIP Publishing
Published Version
Abstract
Two-color pump-probe measurements are used to study the carrier dynamics of InAs/GaAs quantum dots in a waveguide structure under reverse bias conditions. For the case of initially populating the ground state (GS), we find relaxation dynamics that include both absorptive and bleaching components in the excited state (ES) wavelength range. We reproduce the main features of this induced absorption dynamics using a simple model with an additional term for induced absorption at the ES due to carriers injected at the GS. The induced absorption dynamics includes multiple recovery timescales which can be attributed to phonon-assisted processes of GS/ES interaction. (C) 2010 American Institute of Physics. (doi:10.1063/1.3491805)
Description
Keywords
Laser , Quantum dots , Pump probe experiments , Excited states , III-V semiconductors , Ground states
Citation
Piwonski, T., Pulka, J., Viktorov, E. A., Huyet, G., Manning, R. J., Houlihan, J., Mandel, P. and Erneux, T. (2010) 'Induced absorption dynamics in quantum dot based waveguide electroabsorbers', Applied Physics Letters, 97(12), pp. 121103. doi: 10.1063/1.3491805
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Copyright
© 2010 American Institute of Physics.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Piwonski, T., Pulka, J., Viktorov, E. A., Huyet, G., Manning, R. J., Houlihan, J., Mandel, P. and Erneux, T. (2010) 'Induced absorption dynamics in quantum dot based waveguide electroabsorbers', Applied Physics Letters, 97(12), pp. 121103 and may be found at http://aip.scitation.org/doi/abs/10.1063/1.3491805