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Pump dependence of the dynamics of quantum dot based waveguide absorbers
Viktorov, Evgeny A.; Erneux, Thomas; Piwonski, Tomasz; Pulka, Jaroslaw; Huyet, Guillaume; Houlihan, John
Date:
2012
Copyright:
© 2012 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 Viktorov, E. A., Erneux, T., Piwonski, T., Pulka, J., Huyet, G. and Houlihan, J. (2012) 'Pump dependence of the dynamics of quantum dot based waveguide absorbers', Applied Physics Letters, 100(24), pp. 241108 and may be found at http://aip.scitation.org/doi/abs/10.1063/1.4729155
Citation:
Viktorov, E. A., Erneux, T., Piwonski, T., Pulka, J., Huyet, G. and Houlihan, J. (2012) 'Pump dependence of the dynamics of quantum dot based waveguide absorbers', Applied Physics Letters, 100(24), pp. 241108. doi: 10.1063/1.4729155
Abstract:
The nonlinear two stage recovery of quantum dot based reverse-biased waveguide absorbers is investigated experimentally and analytically as a function of the initial ground state occupation probability of the dot. The latter is controlled experimentally by the pump pulse power. The slow stage of the recovery is exponential and its basic timescale is independent of pump power. The fast stage of the recovery is a logistic function which we analyze in detail. The relative strength of slow to fast components is highlighted and the importance of higher order absorption processes at the highest pump level is demonstrated. (C) 2012 American Institute of Physics. (http://dx.doi.org/10.1063/1.4729155)
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