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Carrier Dynamics and Homogeneous Broadening in Quantum Dot Waveguides

Published

Author(s)

Kevin L. Silverman, Richard P. Mirin, Steven T. Cundiff, Benjamin Klein,

Abstract

Coupling between InGaAs/GaAs quantum dots is investigated using differential transmission spectroscopy. Degenerate measurements show an initial carrier relaxation time that is relatively independent of carrier density. Two-color pump-probe techniques are used to spectrally resolve the carrier dynamics, revealing transfer between quantum dots and a homogeneous linewidth of 12 nm at room temperature. The time constant for carrier escape is shown to increase from 35 ps at room temperature to 130 ps at 230 K. We then employ a rate equation model to simulate the performance of a semiconductor optical amplifier with QDs as the active region.
Proceedings Title
Proc., SPIE, The International Society for Optical Engineering, Integrated Optoelectronic Devices 2005
Volume
5734
Conference Dates
January 24-25, 2005
Conference Location
San Jose, CA

Citation

Silverman, K. , Mirin, R. , Cundiff, S. and Klein, B. (2005), Carrier Dynamics and Homogeneous Broadening in Quantum Dot Waveguides, Proc., SPIE, The International Society for Optical Engineering, Integrated Optoelectronic Devices 2005, San Jose, CA (Accessed July 23, 2024)

Issues

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Created January 1, 2005, Updated June 2, 2021