Coherent versus incoherent dynamics in InAs quantum-dot active wave guides

Paola Borri, W. Langbein, Jørn Märcher Hvam, F. Heinrichsdorff, M.-H. Mao, D. Bimberg

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Coherent dynamics measured by time-resolved four-wave mixing is compared to incoherent population dynamics measured by differential transmission spectroscopy on the ground-state transition at room temperature of two types of InAs-based quantum dots with different confinement energies. The measurements are performed with heterodyne detection on quantum-dot active wave guides to enhance the light-matter interaction length. An elastic nature of the measured dephasing is revealed which is independent of the dot energy level scheme.
Original languageEnglish
JournalJournal of Applied Physics
Issue number11
Pages (from-to)6542-6544
Publication statusPublished - 2001

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Copyright (2001) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.


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