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Ultrafast spectral hole burning spectroscopy of exciton spin flip processes in quantum dots
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10.1063/1.2202721
/content/aip/journal/apl/88/19/10.1063/1.2202721
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/19/10.1063/1.2202721
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Pump and probe pulse spectra. (b) SHB signals for (upper trace) and -polarized (lower trace) probe pulses. The polarization of the pump is in both cases . Inset: Energy level diagram of a QD. The polarization selection rules for optical transitions and the spin relaxation are indicated by solid and dashed lines, respectively. Relaxation between two states and occurs at a rate , where denotes the exciton population decay rate, denotes the decay rate of the biexciton population, and is the relaxation between polarization states due to spin relaxation.

Image of FIG. 2.
FIG. 2.

SHB spectra recorded at . Inset: Temperature dependence of the linewidth. The filled symbols indicate the experimental linewidth after deconvolution of the pump pulse from the raw data (open symbols). The solid line shows the fitting of assuming acoustic phonon broadening.

Image of FIG. 3.
FIG. 3.

(a) Temporal evolution of the spectral antihole for (open symbols) and -polarized (filled symbols) probe pulses at . Inset: Decay of the spin polarization (symbols). A fit to the experimental data (line) yields . (b) Temperature dependence of the spin relaxation time.

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/content/aip/journal/apl/88/19/10.1063/1.2202721
2006-05-09
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrafast spectral hole burning spectroscopy of exciton spin flip processes in InAs∕GaAs quantum dots
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/19/10.1063/1.2202721
10.1063/1.2202721
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