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Proceedings Paper

Detection of dark-state relaxation through two-dimensional nano-optical spectroscopy
Author(s): Markus Krecik; Sven M. Hein; Mario Schoth; Marten Richter
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Paper Abstract

The correct understanding of the electronic structure and relaxation behavior in nanosystems is essential for technical applications. We propose a spectroscopic method to measure the dipole-forbidden electronic transitions of quantum dots and trace their relaxation behavior. Therefore, we utilize two-dimensional coherent spectroscopy, which is an advantageous tool to get information about the dynamics of exciton densities and coherences in nanoscopic structures. In combination with nanoplasmonics, it enables excitation of dipole-forbidden states. A nanoplasmonic dolmen structure allows us to dynamically excite either dipole-allowed and dipole forbidden states selectively. In combination with two-dimensional spectroscopy, this gives us additional control over excitation and tracing relaxation involving dipole-forbidden states in nanoscopic systems.

Paper Details

Date Published: 14 March 2015
PDF: 10 pages
Proc. SPIE 9361, Ultrafast Phenomena and Nanophotonics XIX, 936109 (14 March 2015); doi: 10.1117/12.2075883
Show Author Affiliations
Markus Krecik, Technische Univ. Berlin (Germany)
Sven M. Hein, Technische Univ. Berlin (Germany)
Mario Schoth, Technische Univ. Berlin (Germany)
Marten Richter, Technische Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 9361:
Ultrafast Phenomena and Nanophotonics XIX
Markus Betz; Abdulhakem Y. Elezzabi; Kong-Thon Tsen, Editor(s)

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