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Frequency upconverted lasing of nanocrystal quantum dots in microbeads
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10.1063/1.3242352
/content/aip/journal/apl/95/18/10.1063/1.3242352
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/18/10.1063/1.3242352
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) TEM image of as-prepared CdSe/CdS/ZnS core-shell NQDs (scale bar: 50 nm). Inset shows the high resolution image of an individual NQD; (b) SEM image of a silica microbead (scale bar: ) with a closeup view showing the porous morphology (scale bar: ). (c) PL image of the dispersed microbeads (scale bar: ). Inset shows the image of WGM lasing of a single microbead (scale bar: ).

Image of FIG. 2.
FIG. 2.

(a) TPP emission spectra recorded from an individual microbead at different excitation fluence. (b) Peak intensity is plotted as a function of the quadratic of excitation fluence. (c) Time-resolved PL traces with excitation fluence below (SPE) and above (Lasing) the lasing threshold.

Image of FIG. 3.
FIG. 3.

Shot-dependent lasing intensity of a NQD-doped microbead and ASE from a NQD thin film. Data were recorded with the excitation fluence twice of the thresholds.

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/content/aip/journal/apl/95/18/10.1063/1.3242352
2009-11-06
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Frequency upconverted lasing of nanocrystal quantum dots in microbeads
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/18/10.1063/1.3242352
10.1063/1.3242352
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