The role of optical excitation power on the emission spectra of a strongly coupled quantum dot-micropillar system | Zendy

S. Münch | Zendy; Stephan Reitzenstein | Zendy; P. Franeck | Zendy; Andreas Löffler | Zendy; Tobias Heindel | Zendy; Sven Höfling | Zendy; L. Worschech | Zendy; A. Forchel | Zendy

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The role of optical excitation power on the emission spectra of a strongly coupled quantum dot-micropillar system

Author(s) -

S. Münch,

Stephan Reitzenstein,

P. Franeck,

Andreas Löffler,

Tobias Heindel,

Sven Höfling,

L. Worschech,

A. Forchel

Publication year - 2009

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.17.012821

Subject(s) - excitation , exciton , quantum dot , atomic physics , physics , photon , emission spectrum , spontaneous emission , spectral line , coupling (piping) , quantum optics , molecular physics , optics , laser , materials science , condensed matter physics , optoelectronics , quantum mechanics , metallurgy

A strongly coupled quantum dot-micropillar cavity system is studied under variation of the excitation power. The characteristic double peak spectral shape of the emission with a vacuum Rabi splitting of 85 microeV at low excitation transforms gradually into a single broad emission peak when the excitation power is increased. Modelling the experimental data by a recently published formalism [Laussy et al., Phys. Rev. Lett. 101, 083601 (2008)] yields a transition from strong coupling towards weak coupling which is mainly attributed to an excitation power driven decrease of the exciton-photon coupling constant.

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