Fig. 9: Temporal and spectral analysis of the light pulses emitted by QDs in a switched QDM. | Light: Science & Applications

Fig. 9: Temporal and spectral analysis of the light pulses emitted by QDs in a switched QDM.

From: Tailoring the properties of quantum dot-micropillars by ultrafast optical injection of free charge carriers

Fig. 9

Streak camera image obtained for light pulses emitted by a sub-ensemble of QDs in a switched QDM that have been frequency-selected using a pass-band filter (2μm diameter, \(\hbar{\omega_m^\circ}\) = 1.407 eV, \(\hbar{\omega_w}\) = 1.412 eV, w = 3 meV), during its transient coupling with the fundamental mode of the cavity. The pump beam is matched to the top facet of the QDM, Ep = 1.6 eV, P = 50 pJ/pulse and S = 8 meV. The PL spectrum (top panel) and the temporal PL profile (right panel) are shown in linear scale, and have been, respectively, obtained from the bare image by summing the PL signal over all times and all photon energies.

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