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Polarization of intersubband transitions in self-assembled quantum dots
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10.1063/1.2838755
/content/aip/journal/apl/92/4/10.1063/1.2838755
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/4/10.1063/1.2838755

Figures

Image of FIG. 1.
FIG. 1.

Schematic view of intersubband transitions from the ground electronic state to the first two excited states and in a self-assembled quantum dot which is elongated along the direction. These transitions are, respectively, polarized along the long and short axes of the structure. In the spectrum at the bottom plots, the two absorption peaks, which correspond to these two polarized transitions that have respective transition energy and .

Image of FIG. 2.
FIG. 2.

Plots of the probability densities of the three major components , , and for the ground and first two excited states in the conduction bands, , , and . Labeled in each subplot is the number of nodes in the corresponding probability density.

Image of FIG. 3.
FIG. 3.

Ratio of intensity between the transitions from the ground electronic state to the first two excited states and , calculated as a function of the aspect ratio of the structure. The shape of the symbols correspond to the denoted structure and the solid line shows a linear fit of the result. Inset: schematic view of intersubband transitions in an isotropic quantum dot.

Tables

Generic image for table
Table I.

Component profile of the electronic states, , in an elongated dot of aspect ratio .

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/content/aip/journal/apl/92/4/10.1063/1.2838755
2008-01-30
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Polarization of intersubband transitions in self-assembled quantum dots
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/4/10.1063/1.2838755
10.1063/1.2838755
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