16 June 2004 Dynamics of stimulated emission in InAs quantum dot laser structures measured in pump-probe experiments
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Abstract
Non-linear carrier-photon dynamics are studied for optically pumped InAs quantum dot (QD) laser structures, using excitation into the GaAs barrier by two degenerate pump and probe laser pulses. The non-linear emission from QDs excited by the pump pulse is further amplified by the probe excitation. By varying the delay between the two pulses a very fast decay of the QD excited state emission is measured. Notably slower dynamics for the QD ground state are observed, governed by state filling phenomena, which result in gain saturation.
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Alexander I. Tartakovskii, Kristian M. Groom, Ali M. Adawi, Aristide Lemaître, David J. Mowbray, Maurice S. Skolnick, Mark Hopkinson, "Dynamics of stimulated emission in InAs quantum dot laser structures measured in pump-probe experiments", Proc. SPIE 5352, Ultrafast Phenomena in Semiconductors and Nanostructure Materials VIII, (16 June 2004); doi: 10.1117/12.527694; https://doi.org/10.1117/12.527694
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KEYWORDS
Picosecond phenomena

Photons

Gallium arsenide

Indium arsenide

Quantum dot lasers

Laser beam diagnostics

Optical amplifiers

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