Coherent coupling dynamics in a quantum dot microdisk laser

Details Coherent coupling dynamics in a quantum dot microdisk laser Coherent coupling dynamics in a quantum dot microdisk laser

2002-06-05

arxiv.org/abs/cond-mat/0206065v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Accepted for publication, Phys. Rev. B Rapid Communications, 11 pages, 4 figures

Scientific paper

10.1103/PhysRevB.66.081307

Luminescence intensity autocorrelation (LIA) is employed to investigate coupling dynamics between (In,Ga)As QDs and a high-Q (~7000) resonator with ultrafast time resolution (150 fs), below and above the lasing threshold at T = 5 K. For QDs resonant and non-resonant with the cavity we observe both a six-fold enhancement and a 0.77 times reduction of the spontaneous emission rate, respectively. In addition, LIA spectroscopy reveals the onset of coherent coupling at the lasing threshold through qualitative changes in the dynamic behavior and a tripling of the resonant QD emission rate.

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