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All-optical spin-dependent polarization switching in Bragg-spaced quantum well structures
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10.1063/1.2042550
/content/aip/journal/apl/87/10/10.1063/1.2042550
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/10/10.1063/1.2042550
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Contrast ratio (solid circles) as a function of control-signal delay for a , 1 ps control pulse, and a 650 fs signal pulse spectrally positioned as shown in Fig 2. The temporally resolved control pulse (solid line) is shown for comparison. A schematic of the experimental geometry is shown in the inset.

Image of FIG. 2.
FIG. 2.

(a) The reflectivity stop band of the 200 period BSQW when excited by a right circularly polarized , 1 ps control pulse (spectrum of the control pulse indicated by the shaded black area) as measured by a broadband signal pulse (21 meV, spectrally centered at the position of the arrow) having the same circular polarization, , (dashed line) and the opposite circular polarization, , (dashed-dotted line). The measured reflectivity stop bands without the control for both and polarizations are indicated by the curve bounding grey shaded area. (b) The differential reflectivity for oppositely polarized control and signal measured for a control-signal delay of (solid squares), (solid line), and , (dashed line). (c) The corresponding differential reflectivities for the same delays for control and signal with the same circular polarizations. All energies are plotted relative to the hh exciton resonance, .

Image of FIG. 3.
FIG. 3.

Spectrally resolved contrast ratio (solid line) and throughput (dashed line) for the 1 ps control pulse used in Figs. 1 and 2 at . Spectra were taken using the experimental geometery shown in the inset to Fig. 1 and a spectrally broad signal pulse (21 meV). The linear reflectivity stop band is shown for reference (shaded area).

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/content/aip/journal/apl/87/10/10.1063/1.2042550
2005-09-02
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: All-optical spin-dependent polarization switching in Bragg-spaced quantum well structures
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/10/10.1063/1.2042550
10.1063/1.2042550
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