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Whispering gallery modes in high quality microdisks with CdSe quantum dots studied at room temperature
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10.1063/1.2345236
/content/aip/journal/apl/89/9/10.1063/1.2345236
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/9/10.1063/1.2345236
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Figures

Image of FIG. 1.
FIG. 1.

(a) Cross section scheme of the molecular beam epitaxy grown heterostructure. Self-assembled CdSe quantum dots were sandwiched between thick ZnSe and thick ZnMgSSe, on either side. The sample was grown on GaAs (001) substrate. (b) Side view electron microscope image of a microdisk with a diameter of at the bottom.

Image of FIG. 2.
FIG. 2.

(a) Sketch of the experimental setup: The etched microdisks were glued on a glass plate and the GaAs substrate was removed totally. The photoluminescence was detected in the direction perpendicular to the exciting laser beam for different angles of rotation . (b) Micro-PL spectra for three different . Whispering gallery modes dominate the spectrum for small values, indicating that the modes emit most efficiently in a direction parallel to the disk surface.

Image of FIG. 3.
FIG. 3.

Microphotoluminescence spectra for different linear polarizations: TE polarized and TM polarized. The energy positions of narrow and broad modes are indicated by the solid and dotted vertical lines, respectively, each separated by .

Image of FIG. 4.
FIG. 4.

Microphotoluminescence spectra of microdisks with different diameters. The mode spacing between consecutive modes (indicated by an arrow) increases with decreasing disk size. Inset: vs disk diameter (circles). The solid line was fitted using Eq. (1) .

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/content/aip/journal/apl/89/9/10.1063/1.2345236
2006-08-28
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Whispering gallery modes in high quality ZnSe∕ZnMgSSe microdisks with CdSe quantum dots studied at room temperature
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/9/10.1063/1.2345236
10.1063/1.2345236
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