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Two-photon spectral hole burning spectroscopy of InAs/GaAs quantum dots
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View: Figures


Image of FIG. 1.
FIG. 1.

Energy level scheme of single- (left) and two- (right) photon excitation in a QD using photons with linear or circular polarization (a). Full range PL of the sample under investigation using 532 nm excitation (b).

Image of FIG. 2.
FIG. 2.

Pump power dependent SHB spectra with excitation intensities spanning from 50 to . Inset: intensity dependence of spectral hole labeled .

Image of FIG. 3.
FIG. 3.

SHB response for high pump intensities. Polarization of pump/probe: linear/linear (solid with visible peak), Circular/Linear (solid without visible peak) line). Pump pulse (dashed peak centered at ), TPA spectral hole (dashed dashed peak center at ). Fit of Lin/Lin spectrum with Circ/Lin and TPA spectral hole (dotted). are the transition energies of the . Inset: difference between black and red curve showing SE hole as well as hole.

Image of FIG. 4.
FIG. 4.

PL recorded under pulsed two-photon excitation at energies above the single-photon resonance. Inset: power dependence of the QD luminescence under pulsed two-photon excitation.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Two-photon spectral hole burning spectroscopy of InAs/GaAs quantum dots