Mixed state effects in waveguide electro-absorbers based on quantum dots
Piwonski, Tomasz; Pulka, Jaroslaw; Huyet, Guillaume; Houlihan, John; Viktorov, Evgeny A.; Erneux, Thomas
Date:
2011
Copyright:
© 2011 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., Huyet, G., Houlihan, J., Viktorov, E. A. and Erneux, T. (2011) 'Mixed state effects in waveguide electro-absorbers based on quantum dots', Applied Physics Letters, 99(17), pp. 171103 and may be found at http://aip.scitation.org/doi/abs/10.1063/1.3653287
Citation:
Piwonski, T., Pulka, J., Huyet, G., Houlihan, J., Viktorov, E. A. and Erneux, T. (2011) 'Mixed state effects in waveguide electro-absorbers based on quantum dots', Applied Physics Letters, 99(17), pp. 171103. doi: 10.1063/1.3653287
Abstract:
Multi-pulse heterodyne pump-probe measurements are used to investigate the reverse bias dynamics of InAs/GaAs quantum dots in a waveguide structure. Using a femtosecond pulse, we simultaneously populate high energy ground states and low energy excited states and measure the resulting gain and phase dynamics over the bandwidth of the pulse. We identify a similar to 5 ps timescale in the phase dynamics which can be associated with low energy ground states outside the pulse bandwidth and may provide an explanation for the deterioration of monolithic mode locked laser performance at high reverse voltages. (C) 2011 American Institute of Physics. (doi:10.1063/1.3653287)
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