Time-resolved spectroscopy of multiexcitonic decay in an InAs quantum dot

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PhysRevB.65.073310.pdf (472.11 KB)

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https://journals.aps.org/prb/abstract/10.1103/PhysRevB.65.073310

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https://doi.org/10.1103/PhysRevB.65.073310
 http://hdl.handle.net/11603/29247

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UMBC Physics Department

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https://orcid.org/0000-0002-6370-8765

Date

2002-02-01

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journal articles
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Citation of Original Publication

Santori, Charles et al. “Time-Resolved Spectroscopy of Multiexcitonic Decay in an InAs Quantum Dot.” Physical Review B 65, no. 7 (2002). https://doi.org/10.1103/PhysRevB.65.073310.

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©2002 American Physical Society

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Abstract

The multiexcitonic decay process in a single InAs quantum dot is studied through high-resolution time-resolved spectroscopy. A cascaded emission sequence involving three spectral lines is seen that is described well over a wide range of pump powers by a simple model. The measured biexcitonic decay rate is about 1.5 times the single-exciton decay rate. This ratio suggests the presence of selection rules, as well as a significant effect of the Coulomb interaction on the biexcitonic wave function.